40635442 has 16 divisors (see below), whose sum is σ = 62052480. Its totient is φ = 19954528.

The previous prime is 40635437. The next prime is 40635443. The reversal of 40635442 is 24453604.

It is a self number, because there is not a number n which added to its sum of digits gives 40635442.

It is not an unprimeable number, because it can be changed into a prime (40635443) 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, 29043 + ... + 30409.

It is an arithmetic number, because the mean of its divisors is an integer number (3878280).

Almost surely, 2^40635442 is an apocalyptic number.

40635442 is a deficient number, since it is larger than the sum of its proper divisors (21417038).

40635442 is a wasteful number, since it uses less digits than its factorization.

40635442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625.

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 40635442 is about 6374.5934772345. The cubic root of 40635442 is about 343.7966675154.

The spelling of 40635442 in words is "forty million, six hundred thirty-five thousand, four hundred forty-two".