40402106 has 4 divisors (see below), whose sum is σ = 60603162. Its totient is φ = 20201052.

The previous prime is 40402091. The next prime is 40402123. The reversal of 40402106 is 60120404.

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., 38950081 + 1452025 = 6241^2 + 1205^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10100525 + ... + 10100528.

Almost surely, 2^40402106 is an apocalyptic number.

40402106 is a deficient number, since it is larger than the sum of its proper divisors (20201056).

40402106 is a wasteful number, since it uses less digits than its factorization.

40402106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20201055.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 40402106 is about 6356.2650983105. The cubic root of 40402106 is about 343.1373565534.

The spelling of 40402106 in words is "forty million, four hundred two thousand, one hundred six".