40426187 has 6 divisors (see below), whose sum is σ = 42944388. Its totient is φ = 38047904.

The previous prime is 40426181. The next prime is 40426189. The reversal of 40426187 is 78162404.

It is not a de Polignac number, because 40426187 - 2⁴ = 40426171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40426181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69653 + ... + 70230.

It is an arithmetic number, because the mean of its divisors is an integer number (7157398).

Almost surely, 2^40426187 is an apocalyptic number.

40426187 is a deficient number, since it is larger than the sum of its proper divisors (2518201).

40426187 is a wasteful number, since it uses less digits than its factorization.

40426187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139917 (or 139900 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 40426187 is about 6358.1590889187. The cubic root of 40426187 is about 343.2055167753.

The spelling of 40426187 in words is "forty million, four hundred twenty-six thousand, one hundred eighty-seven".