42156323 has 16 divisors (see below), whose sum is σ = 47440512. Its totient is φ = 37128000.

The previous prime is 42156313. The next prime is 42156347. The reversal of 42156323 is 32365124.

It is a cyclic number.

It is not a de Polignac number, because 42156323 - 2¹⁴ = 42139939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42156292 and 42156301.

It is not an unprimeable number, because it can be changed into a prime (42156313) 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, 94940 + ... + 95382.

It is an arithmetic number, because the mean of its divisors is an integer number (2965032).

Almost surely, 2^42156323 is an apocalyptic number.

42156323 is a deficient number, since it is larger than the sum of its proper divisors (5284189).

42156323 is a wasteful number, since it uses less digits than its factorization.

42156323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706.

The product of its digits is 4320, while the sum is 26.

The square root of 42156323 is about 6492.7900782329. The cubic root of 42156323 is about 348.0333868307.

The spelling of 42156323 in words is "forty-two million, one hundred fifty-six thousand, three hundred twenty-three".