42720936731440 has 160 divisors (see below), whose sum is σ = 118685900669760. Its totient is φ = 14116894310400.

The previous prime is 42720936731413. The next prime is 42720936731471. The reversal of 42720936731440 is 4413763902724.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48801981 + ... + 49669660.

It is an arithmetic number, because the mean of its divisors is an integer number (741786879186).

Almost surely, 2^{42720936731440} is an apocalyptic number.

42720936731440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42720936731440 is an abundant number, since it is smaller than the sum of its proper divisors (75964963938320).

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

42720936731440 is a wasteful number, since it uses less digits than its factorization.

42720936731440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98471711 (or 98471705 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 52.

The spelling of 42720936731440 in words is "forty-two trillion, seven hundred twenty billion, nine hundred thirty-six million, seven hundred thirty-one thousand, four hundred forty".