42002432 has 24 divisors (see below), whose sum is σ = 83988450. Its totient is φ = 21000192.

The previous prime is 42002431. The next prime is 42002449. The reversal of 42002432 is 23420024.

It can be written as a sum of positive squares in only one way, i.e., 39740416 + 2262016 = 6304^2 + 1504^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42002432.

It is not an unprimeable number, because it can be changed into a prime (42002431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8207 + ... + 12302.

Almost surely, 2^42002432 is an apocalyptic number.

It is an amenable number.

42002432 is a deficient number, since it is larger than the sum of its proper divisors (41986018).

42002432 is an equidigital number, since it uses as much as digits as its factorization.

42002432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20531 (or 20511 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 42002432 is about 6480.9283285653. The cubic root of 42002432 is about 347.6093736423.

Adding to 42002432 its reverse (23420024), we get a palindrome (65422456).

The spelling of 42002432 in words is "forty-two million, two thousand, four hundred thirty-two".