40155426 has 20 divisors (see below), whose sum is σ = 89978262. Its totient is φ = 13385088.

The previous prime is 40155407. The next prime is 40155433. The reversal of 40155426 is 62455104.

It can be written as a sum of positive squares in only one way, i.e., 38452401 + 1703025 = 6201^2 + 1305^2 .

It is a super-2 number, since 2×40155426² = 3224916474482952, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 40155426.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 123775 + ... + 124098.

Almost surely, 2^40155426 is an apocalyptic number.

40155426 is an abundant number, since it is smaller than the sum of its proper divisors (49822836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40155426 is a wasteful number, since it uses less digits than its factorization.

40155426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247887 (or 247878 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 40155426 is about 6336.8309114257. The cubic root of 40155426 is about 342.4375747134.

The spelling of 40155426 in words is "forty million, one hundred fifty-five thousand, four hundred twenty-six".