42012547984431 has 24 divisors (see below), whose sum is σ = 60734486616960. Its totient is φ = 27985436505936.

The previous prime is 42012547984427. The next prime is 42012547984457. The reversal of 42012547984431 is 13448974521024.

It is a happy number.

42012547984431 is a `hidden beast` number, since 4 + 2 + 0 + 1 + 2 + 547 + 98 + 4 + 4 + 3 + 1 = 666.

It is not a de Polignac number, because 42012547984431 - 2² = 42012547984427 is a prime.

It is a super-2 number, since 2×42012547984431² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42012547984331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68754630 + ... + 69362988.

It is an arithmetic number, because the mean of its divisors is an integer number (2530603609040).

Almost surely, 2^{42012547984431} is an apocalyptic number.

42012547984431 is a deficient number, since it is larger than the sum of its proper divisors (18721938632529).

42012547984431 is a wasteful number, since it uses less digits than its factorization.

42012547984431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614635 (or 614632 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 54.

The spelling of 42012547984431 in words is "forty-two trillion, twelve billion, five hundred forty-seven million, nine hundred eighty-four thousand, four hundred thirty-one".