42020432 has 10 divisors (see below), whose sum is σ = 81414618. Its totient is φ = 21010208.

The previous prime is 42020393. The next prime is 42020437. The reversal of 42020432 is 23402024.

It can be written as a sum of positive squares in only one way, i.e., 24245776 + 17774656 = 4924^2 + 4216^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 42020432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42020437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1313123 + ... + 1313154.

Almost surely, 2^42020432 is an apocalyptic number.

It is an amenable number.

42020432 is a deficient number, since it is larger than the sum of its proper divisors (39394186).

42020432 is a wasteful number, since it uses less digits than its factorization.

42020432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626285 (or 2626279 counting only the distinct ones).

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

The square root of 42020432 is about 6482.3168697619. The cubic root of 42020432 is about 347.6590221574.

Adding to 42020432 its reverse (23402024), we get a palindrome (65422456).

The spelling of 42020432 in words is "forty-two million, twenty thousand, four hundred thirty-two".