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42031104213 = 372285925879
BaseRepresentation
bin100111001001001111…
…111100000011010101
311000111012221022200110
4213021033330003111
51142034430313323
631150412233233
73015366330300
oct471117740325
9130435838613
1042031104213
111690950a76a
12819016b819
133c6aaca387
14206a241b37
15115ee90793
hex9c93fc0d5

42031104213 has 12 divisors (see below), whose sum is σ = 65191100640. Its totient is φ = 24017773752.

The previous prime is 42031104191. The next prime is 42031104233. The reversal of 42031104213 is 31240113024.

It is not a de Polignac number, because 42031104213 - 26 = 42031104149 is a prime.

It is a super-2 number, since 2×420311042132 (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 42031104213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42031104233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142962793 + ... + 142963086.

It is an arithmetic number, because the mean of its divisors is an integer number (5432591720).

Almost surely, 242031104213 is an apocalyptic number.

It is an amenable number.

42031104213 is a deficient number, since it is larger than the sum of its proper divisors (23159996427).

42031104213 is a wasteful number, since it uses less digits than its factorization.

42031104213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285925896 (or 285925889 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 42031104213 its reverse (31240113024), we get a palindrome (73271217237).

The spelling of 42031104213 in words is "forty-two billion, thirty-one million, one hundred four thousand, two hundred thirteen".

Divisors: 1 3 7 21 49 147 285925879 857777637 2001481153 6004443459 14010368071 42031104213