40202138 has 8 divisors (see below), whose sum is σ = 63477120. Its totient is φ = 19043100.

The previous prime is 40202087. The next prime is 40202153. The reversal of 40202138 is 83120204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 528938 + ... + 529013.

It is an arithmetic number, because the mean of its divisors is an integer number (7934640).

Almost surely, 2^40202138 is an apocalyptic number.

40202138 is a deficient number, since it is larger than the sum of its proper divisors (23274982).

40202138 is a wasteful number, since it uses less digits than its factorization.

40202138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057972.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 40202138 is about 6340.5155941769. The cubic root of 40202138 is about 342.5703068412.

The spelling of 40202138 in words is "forty million, two hundred two thousand, one hundred thirty-eight".