40122021440 has 56 divisors (see below), whose sum is σ = 95572429632. Its totient is φ = 16043456000.

The previous prime is 40122021413. The next prime is 40122021493. The reversal of 40122021440 is 4412022104.

40122021440 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 1021037 + ... + 1059603.

Almost surely, 2^40122021440 is an apocalyptic number.

40122021440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40122021440 is an abundant number, since it is smaller than the sum of its proper divisors (55450408192).

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

40122021440 is a wasteful number, since it uses less digits than its factorization.

40122021440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41835 (or 41825 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 40122021440 its reverse (4412022104), we get a palindrome (44534043544).

The spelling of 40122021440 in words is "forty billion, one hundred twenty-two million, twenty-one thousand, four hundred forty".