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42013019 = 233749369
BaseRepresentation
bin1010000001000…
…1000101011011
32221001111000202
42200101011123
541223404034
64100252415
71020050636
oct240210533
987044022
1042013019
1121796004
12120a110b
13891cb99
145818c1d
153a4d47e
hex281115b

42013019 has 8 divisors (see below), whose sum is σ = 45025440. Its totient is φ = 39099456.

The previous prime is 42013007. The next prime is 42013031. The reversal of 42013019 is 91031024.

It is an interprime number because it is at equal distance from previous prime (42013007) and next prime (42013031).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-42013019 is a prime.

It is a super-2 number, since 2×420130192 = 3530187530988722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42013039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23834 + ... + 25535.

It is an arithmetic number, because the mean of its divisors is an integer number (5628180).

Almost surely, 242013019 is an apocalyptic number.

42013019 is a deficient number, since it is larger than the sum of its proper divisors (3012421).

42013019 is a wasteful number, since it uses less digits than its factorization.

42013019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49429.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 42013019 is about 6481.7450582386. The cubic root of 42013019 is about 347.6385769615.

The spelling of 42013019 in words is "forty-two million, thirteen thousand, nineteen".

Divisors: 1 23 37 851 49369 1135487 1826653 42013019