42421513431 has 16 divisors (see below), whose sum is σ = 65333668608. Its totient is φ = 24197654400.

The previous prime is 42421513423. The next prime is 42421513493. The reversal of 42421513431 is 13431512424.

42421513431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 42421513431 - 2³ = 42421513423 is a prime.

It is a super-3 number, since 3×42421513431³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42421513231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37808275 + ... + 37809396.

It is an arithmetic number, because the mean of its divisors is an integer number (4083354288).

Almost surely, 2^42421513431 is an apocalyptic number.

42421513431 is a deficient number, since it is larger than the sum of its proper divisors (22912155177).

42421513431 is a wasteful number, since it uses less digits than its factorization.

42421513431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75617702.

The product of its digits is 11520, while the sum is 30.

The spelling of 42421513431 in words is "forty-two billion, four hundred twenty-one million, five hundred thirteen thousand, four hundred thirty-one".