42140432 has 40 divisors (see below), whose sum is σ = 83666520. Its totient is φ = 20556800.

The previous prime is 42140419. The next prime is 42140443. The reversal of 42140432 is 23404124.

It can be written as a sum of positive squares in 4 ways, for example, as 21492496 + 20647936 = 4636^2 + 4544^2 .

It is a super-3 number, since 3×42140432³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143678 + ... + 143970.

It is an arithmetic number, because the mean of its divisors is an integer number (2091663).

Almost surely, 2^42140432 is an apocalyptic number.

It is an amenable number.

42140432 is a deficient number, since it is larger than the sum of its proper divisors (41526088).

42140432 is a wasteful number, since it uses less digits than its factorization.

42140432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 485 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 42140432 is about 6491.5662208746. The cubic root of 42140432 is about 347.9896504607.

Adding to 42140432 its reverse (23404124), we get a palindrome (65544556).

The spelling of 42140432 in words is "forty-two million, one hundred forty thousand, four hundred thirty-two".