40242400040 has 32 divisors (see below), whose sum is σ = 90570718080. Its totient is φ = 16092459072.

The previous prime is 40242400013. The next prime is 40242400063. The reversal of 40242400040 is 4000424204.

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

It is a junction number, because it is equal to n+sod(n) for n = 40242399985 and 40242400021.

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, 6077 + ... + 283763.

It is an arithmetic number, because the mean of its divisors is an integer number (2830334940).

Almost surely, 2^40242400040 is an apocalyptic number.

40242400040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40242400040 is an abundant number, since it is smaller than the sum of its proper divisors (50328318040).

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

40242400040 is a wasteful number, since it uses less digits than its factorization.

40242400040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281321 (or 281317 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 40242400040 its reverse (4000424204), we get a palindrome (44242824244).

The spelling of 40242400040 in words is "forty billion, two hundred forty-two million, four hundred thousand, forty".