42239056 has 10 divisors (see below), whose sum is σ = 81838202. Its totient is φ = 21119520.

The previous prime is 42239003. The next prime is 42239059. The reversal of 42239056 is 65093224.

It can be written as a sum of positive squares in only one way, i.e., 34621456 + 7617600 = 5884^2 + 2760^2 .

It is a super-2 number, since 2×42239056² = 3568275703542272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42239059) by changing a digit.

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 as a sum of consecutive naturals, namely, 1319955 + ... + 1319986.

Almost surely, 2^42239056 is an apocalyptic number.

It is an amenable number.

42239056 is a deficient number, since it is larger than the sum of its proper divisors (39599146).

42239056 is a wasteful number, since it uses less digits than its factorization.

42239056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639949 (or 2639943 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 42239056 is about 6499.1580993233. The cubic root of 42239056 is about 348.2609132404.

The spelling of 42239056 in words is "forty-two million, two hundred thirty-nine thousand, fifty-six".