42916690 has 16 divisors (see below), whose sum is σ = 78119640. Its totient is φ = 16973440.

The previous prime is 42916663. The next prime is 42916693. The reversal of 42916690 is 9661924.

It can be written as a sum of positive squares in 4 ways, for example, as 15657849 + 27258841 = 3957^2 + 5221^2 .

It is a super-2 number, since 2×42916690² = 3683684561112200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42916693) 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, 23221 + ... + 25000.

Almost surely, 2^42916690 is an apocalyptic number.

42916690 is a deficient number, since it is larger than the sum of its proper divisors (35202950).

42916690 is a wasteful number, since it uses less digits than its factorization.

42916690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48317.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 42916690 is about 6551.0831165541. The cubic root of 42916690 is about 350.1134054278.

The spelling of 42916690 in words is "forty-two million, nine hundred sixteen thousand, six hundred ninety".