42524394 has 32 divisors (see below), whose sum is σ = 97666560. Its totient is φ = 12207600.

The previous prime is 42524393. The next prime is 42524399. The reversal of 42524394 is 49342524.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (42524393) 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, 15702 + ... + 18209.

It is an arithmetic number, because the mean of its divisors is an integer number (3052080).

Almost surely, 2^42524394 is an apocalyptic number.

42524394 is an abundant number, since it is smaller than the sum of its proper divisors (55142166).

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

42524394 is a wasteful number, since it uses less digits than its factorization.

42524394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33946.

The product of its digits is 34560, while the sum is 33.

The square root of 42524394 is about 6521.0730712054. The cubic root of 42524394 is about 349.0433576946.

It can be divided in two parts, 4252 and 4394, that added together give a triangular number (8646 = T₁₃₁).

The spelling of 42524394 in words is "forty-two million, five hundred twenty-four thousand, three hundred ninety-four".