42156324 has 72 divisors (see below), whose sum is σ = 122810688. Its totient is φ = 11943360.

The previous prime is 42156313. The next prime is 42156347. The reversal of 42156324 is 42365124.

42156324 is a `hidden beast` number, since 4 + 21 + 5 + 632 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32374 + ... + 33650.

It is an arithmetic number, because the mean of its divisors is an integer number (1705704).

Almost surely, 2^42156324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42156324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61405344).

42156324 is an abundant number, since it is smaller than the sum of its proper divisors (80654364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42156324 is a wasteful number, since it uses less digits than its factorization.

42156324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425 (or 1420 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 42156324 is about 6492.7901552414. The cubic root of 42156324 is about 348.0333895826.

The spelling of 42156324 in words is "forty-two million, one hundred fifty-six thousand, three hundred twenty-four".