42540232 has 64 divisors (see below), whose sum is σ = 95760000. Its totient is φ = 17696448.

The previous prime is 42540227. The next prime is 42540263. The reversal of 42540232 is 23204524.

It is a super-2 number, since 2×42540232² = 3619342677227648, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101319 + ... + 101737.

It is an arithmetic number, because the mean of its divisors is an integer number (1496250).

Almost surely, 2^42540232 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 42540232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47880000).

42540232 is an abundant number, since it is smaller than the sum of its proper divisors (53219768).

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

42540232 is a wasteful number, since it uses less digits than its factorization.

42540232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483 (or 465 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 42540232 is about 6522.2873288441. The cubic root of 42540232 is about 349.0866854728.

Adding to 42540232 its reverse (23204524), we get a palindrome (65744756).

The spelling of 42540232 in words is "forty-two million, five hundred forty thousand, two hundred thirty-two".