83239642 has 16 divisors (see below), whose sum is σ = 126752040. Its totient is φ = 40993792.

The previous prime is 83239631. The next prime is 83239643. The reversal of 83239642 is 24693238.

It can be written as a sum of positive squares in 4 ways, for example, as 56085121 + 27154521 = 7489^2 + 5211^2 .

It is not an unprimeable number, because it can be changed into a prime (83239643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38034 + ... + 40162.

Almost surely, 2^83239642 is an apocalyptic number.

83239642 is a deficient number, since it is larger than the sum of its proper divisors (43512398).

83239642 is a wasteful number, since it uses less digits than its factorization.

83239642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2417.

The product of its digits is 62208, while the sum is 37.

The square root of 83239642 is about 9123.5761628870. The cubic root of 83239642 is about 436.6264771460.

The spelling of 83239642 in words is "eighty-three million, two hundred thirty-nine thousand, six hundred forty-two".