40250138 has 16 divisors (see below), whose sum is σ = 63331200. Its totient is φ = 19148976.

The previous prime is 40250137. The next prime is 40250141. The reversal of 40250138 is 83105204.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (40250137) 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, 6956 + ... + 11352.

It is an arithmetic number, because the mean of its divisors is an integer number (3958200).

Almost surely, 2^40250138 is an apocalyptic number.

40250138 is a deficient number, since it is larger than the sum of its proper divisors (23081062).

40250138 is a wasteful number, since it uses less digits than its factorization.

40250138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4621.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 40250138 is about 6344.2996461390. The cubic root of 40250138 is about 342.7065917554.

The spelling of 40250138 in words is "forty million, two hundred fifty thousand, one hundred thirty-eight".