42421001420 has 24 divisors (see below), whose sum is σ = 101810403744. Its totient is φ = 14544343296.

The previous prime is 42421001407. The next prime is 42421001443. The reversal of 42421001420 is 2410012424.

42421001420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×42421001420² (a number of 22 digits) contains 22 as substring.

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 = 42421001392 and 42421001401.

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, 151503437 + ... + 151503716.

It is an arithmetic number, because the mean of its divisors is an integer number (4242100156).

Almost surely, 2^42421001420 is an apocalyptic number.

It is an amenable number.

42421001420 is an abundant number, since it is smaller than the sum of its proper divisors (59389402324).

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

42421001420 is a wasteful number, since it uses less digits than its factorization.

42421001420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303007169 (or 303007167 counting only the distinct ones).

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

Adding to 42421001420 its reverse (2410012424), we get a palindrome (44831013844).

The spelling of 42421001420 in words is "forty-two billion, four hundred twenty-one million, one thousand, four hundred twenty".