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42008702895 = 335311175577
BaseRepresentation
bin100111000111111010…
…011110111110101111
311000102122210012212000
4213013322132332233
51142013211443040
631144252143343
73015005040315
oct470772367657
9130378705760
1042008702895
11168a78aa285
128184767b53
133c66285c63
1420672900b5
15115d018130
hex9c7e9efaf

42008702895 has 16 divisors (see below), whose sum is σ = 74682138720. Its totient is φ = 22404641472.

The previous prime is 42008702893. The next prime is 42008702903. The reversal of 42008702895 is 59820780024.

It is not a de Polignac number, because 42008702895 - 21 = 42008702893 is a prime.

It is a super-2 number, since 2×420087028952 (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 42008702895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42008702893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155587654 + ... + 155587923.

It is an arithmetic number, because the mean of its divisors is an integer number (4667633670).

Almost surely, 242008702895 is an apocalyptic number.

42008702895 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42008702895 is a deficient number, since it is larger than the sum of its proper divisors (32673435825).

42008702895 is a wasteful number, since it uses less digits than its factorization.

42008702895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311175591 (or 311175585 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 42008702895 in words is "forty-two billion, eight million, seven hundred two thousand, eight hundred ninety-five".

Divisors: 1 3 5 9 15 27 45 135 311175577 933526731 1555877885 2800580193 4667633655 8401740579 14002900965 42008702895