40642726 has 16 divisors (see below), whose sum is σ = 62632080. Its totient is φ = 19768320.

The previous prime is 40642711. The next prime is 40642741. The reversal of 40642726 is 62724604.

It is an interprime number because it is at equal distance from previous prime (40642711) and next prime (40642741).

It is a super-2 number, since 2×40642726² = 3303662353422152, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46885 + ... + 47743.

It is an arithmetic number, because the mean of its divisors is an integer number (3914505).

Almost surely, 2^40642726 is an apocalyptic number.

40642726 is a deficient number, since it is larger than the sum of its proper divisors (21989354).

40642726 is a wasteful number, since it uses less digits than its factorization.

40642726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1479.

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 40642726 is about 6375.1647821841. The cubic root of 40642726 is about 343.8172084126.

The spelling of 40642726 in words is "forty million, six hundred forty-two thousand, seven hundred twenty-six".