40556402 has 4 divisors (see below), whose sum is σ = 60834606. Its totient is φ = 20278200.

The previous prime is 40556381. The next prime is 40556419. The reversal of 40556402 is 20465504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 34351321 + 6205081 = 5861^2 + 2491^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10139099 + ... + 10139102.

Almost surely, 2^40556402 is an apocalyptic number.

40556402 is a deficient number, since it is larger than the sum of its proper divisors (20278204).

40556402 is a wasteful number, since it uses less digits than its factorization.

40556402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20278203.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 40556402 is about 6368.3908485582. The cubic root of 40556402 is about 343.5736165297.

The spelling of 40556402 in words is "forty million, five hundred fifty-six thousand, four hundred two".