40140137 has 4 divisors (see below), whose sum is σ = 40648320. Its totient is φ = 39631956.

The previous prime is 40140109. The next prime is 40140161. The reversal of 40140137 is 73104104.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40140137 - 2⁶ = 40140073 is a prime.

It is a super-2 number, since 2×40140137² = 3222461196757538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40140167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 253973 + ... + 254130.

It is an arithmetic number, because the mean of its divisors is an integer number (10162080).

Almost surely, 2^40140137 is an apocalyptic number.

It is an amenable number.

40140137 is a deficient number, since it is larger than the sum of its proper divisors (508183).

40140137 is an equidigital number, since it uses as much as digits as its factorization.

40140137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508182.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 40140137 is about 6335.6244364703. The cubic root of 40140137 is about 342.3941086681.

The spelling of 40140137 in words is "forty million, one hundred forty thousand, one hundred thirty-seven".