40042251312 has 80 divisors (see below), whose sum is σ = 118880605440. Its totient is φ = 11376711936.

The previous prime is 40042251311. The next prime is 40042251313. The reversal of 40042251312 is 21315224004.

It is an interprime number because it is at equal distance from previous prime (40042251311) and next prime (40042251313).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (40042251311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272743 + ... + 393030.

It is an arithmetic number, because the mean of its divisors is an integer number (1486007568).

Almost surely, 2^40042251312 is an apocalyptic number.

40042251312 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

40042251312 is an abundant number, since it is smaller than the sum of its proper divisors (78838354128).

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

40042251312 is a wasteful number, since it uses less digits than its factorization.

40042251312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665970 (or 665964 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 40042251312 its reverse (21315224004), we get a palindrome (61357475316).

The spelling of 40042251312 in words is "forty billion, forty-two million, two hundred fifty-one thousand, three hundred twelve".