40201138 has 4 divisors (see below), whose sum is σ = 60301710. Its totient is φ = 20100568.

The previous prime is 40201103. The next prime is 40201157. The reversal of 40201138 is 83110204.

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., 40106889 + 94249 = 6333^2 + 307^2 .

It is a super-2 number, since 2×40201138² = 3232262992990088, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10050283 + ... + 10050286.

Almost surely, 2^40201138 is an apocalyptic number.

40201138 is a deficient number, since it is larger than the sum of its proper divisors (20100572).

40201138 is a wasteful number, since it uses less digits than its factorization.

40201138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20100571.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 40201138 is about 6340.4367357462. The cubic root of 40201138 is about 342.5674664189.

The spelling of 40201138 in words is "forty million, two hundred one thousand, one hundred thirty-eight".