42042022421 has 16 divisors (see below), whose sum is σ = 49842992640. Its totient is φ = 34712046720.

The previous prime is 42042022411. The next prime is 42042022441. The reversal of 42042022421 is 12422024024.

42042022421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 42042022421 - 2¹⁴ = 42042006037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42042022411) 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, 904466 + ... + 949811.

It is an arithmetic number, because the mean of its divisors is an integer number (3115187040).

Almost surely, 2^42042022421 is an apocalyptic number.

42042022421 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

42042022421 is a deficient number, since it is larger than the sum of its proper divisors (7800970219).

42042022421 is a wasteful number, since it uses less digits than its factorization.

42042022421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854404.

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 42042022421 its reverse (12422024024), we get a palindrome (54464046445).

The spelling of 42042022421 in words is "forty-two billion, forty-two million, twenty-two thousand, four hundred twenty-one".