42405234 has 32 divisors (see below), whose sum is σ = 87381504. Its totient is φ = 13710720.

The previous prime is 42405197. The next prime is 42405269. The reversal of 42405234 is 43250424.

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, 54472 + ... + 55244.

It is an arithmetic number, because the mean of its divisors is an integer number (2730672).

Almost surely, 2^42405234 is an apocalyptic number.

42405234 is an abundant number, since it is smaller than the sum of its proper divisors (44976270).

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

42405234 is a wasteful number, since it uses less digits than its factorization.

42405234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042.

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 42405234 is about 6511.9301286178. The cubic root of 42405234 is about 348.7170280104.

Adding to 42405234 its reverse (43250424), we get a palindrome (85655658).

The spelling of 42405234 in words is "forty-two million, four hundred five thousand, two hundred thirty-four".