42640592 has 10 divisors (see below), whose sum is σ = 82616178. Its totient is φ = 21320288.

The previous prime is 42640571. The next prime is 42640603. The reversal of 42640592 is 29504624.

It can be written as a sum of positive squares in only one way, i.e., 28472896 + 14167696 = 5336^2 + 3764^2 .

It is a super-2 number, since 2×42640592² = 3636440172220928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1332503 + ... + 1332534.

Almost surely, 2^42640592 is an apocalyptic number.

It is an amenable number.

42640592 is a deficient number, since it is larger than the sum of its proper divisors (39975586).

42640592 is a wasteful number, since it uses less digits than its factorization.

42640592 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2665045 (or 2665039 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 42640592 is about 6529.9764164965. The cubic root of 42640592 is about 349.3609891410.

The spelling of 42640592 in words is "forty-two million, six hundred forty thousand, five hundred ninety-two".