42216461421 has 16 divisors (see below), whose sum is σ = 58240719360. Its totient is φ = 27168626240.

The previous prime is 42216461389. The next prime is 42216461449. The reversal of 42216461421 is 12416461224.

It is a cyclic number.

It is not a de Polignac number, because 42216461421 - 2⁵ = 42216461389 is a prime.

It is a super-2 number, since 2×42216461421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42216461461) 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, 441316 + ... + 528386.

It is an arithmetic number, because the mean of its divisors is an integer number (3640044960).

Almost surely, 2^42216461421 is an apocalyptic number.

It is an amenable number.

42216461421 is a deficient number, since it is larger than the sum of its proper divisors (16024257939).

42216461421 is a wasteful number, since it uses less digits than its factorization.

42216461421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92676.

The product of its digits is 18432, while the sum is 33.

The spelling of 42216461421 in words is "forty-two billion, two hundred sixteen million, four hundred sixty-one thousand, four hundred twenty-one".