42420232 has 8 divisors (see below), whose sum is σ = 79537950. Its totient is φ = 21210112.

The previous prime is 42420229. The next prime is 42420239. The reversal of 42420232 is 23202424.

It can be written as a sum of positive squares in only one way, i.e., 39012516 + 3407716 = 6246^2 + 1846^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (42420239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2651257 + ... + 2651272.

Almost surely, 2^42420232 is an apocalyptic number.

It is an amenable number.

42420232 is a deficient number, since it is larger than the sum of its proper divisors (37117718).

42420232 is a wasteful number, since it uses less digits than its factorization.

42420232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5302535 (or 5302531 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 42420232 is about 6513.0816055075. The cubic root of 42420232 is about 348.7581348976.

Adding to 42420232 its reverse (23202424), we get a palindrome (65622656).

The spelling of 42420232 in words is "forty-two million, four hundred twenty thousand, two hundred thirty-two".