40012402240 has 56 divisors (see below), whose sum is σ = 100884224952. Its totient is φ = 15063490560.

The previous prime is 40012402193. The next prime is 40012402253. The reversal of 40012402240 is 4220421004.

It can be written as a sum of positive squares in 4 ways, for example, as 17533997056 + 22478405184 = 132416^2 + 149928^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3672171 + ... + 3683050.

It is an arithmetic number, because the mean of its divisors is an integer number (1801504017).

Almost surely, 2^40012402240 is an apocalyptic number.

40012402240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40012402240 is an abundant number, since it is smaller than the sum of its proper divisors (60871822712).

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

40012402240 is a wasteful number, since it uses less digits than its factorization.

40012402240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7355255 (or 7355245 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 40012402240 its reverse (4220421004), we get a palindrome (44232823244).

The spelling of 40012402240 in words is "forty billion, twelve million, four hundred two thousand, two hundred forty".