40251140 has 24 divisors (see below), whose sum is σ = 85480920. Its totient is φ = 15918848.

The previous prime is 40251131. The next prime is 40251151. The reversal of 40251140 is 4115204.

It can be written as a sum of positive squares in 4 ways, for example, as 611524 + 39639616 = 782^2 + 6296^2 .

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 7 ways as a sum of consecutive naturals, for example, 9527 + ... + 13086.

It is an arithmetic number, because the mean of its divisors is an integer number (3561705).

Almost surely, 2^40251140 is an apocalyptic number.

It is an amenable number.

40251140 is an abundant number, since it is smaller than the sum of its proper divisors (45229780).

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

40251140 is a wasteful number, since it uses less digits than its factorization.

40251140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22711 (or 22709 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 40251140 is about 6344.3786141749. The cubic root of 40251140 is about 342.7094355482.

Adding to 40251140 its reverse (4115204), we get a palindrome (44366344).

The spelling of 40251140 in words is "forty million, two hundred fifty-one thousand, one hundred forty".