42417522021 has 24 divisors (see below), whose sum is σ = 68217190464. Its totient is φ = 22962864960.

The previous prime is 42417521963. The next prime is 42417522041. The reversal of 42417522021 is 12022571424.

It is not a de Polignac number, because 42417522021 - 2¹¹ = 42417519973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42417522021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42417522041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2790040 + ... + 2805201.

It is an arithmetic number, because the mean of its divisors is an integer number (2842382936).

Almost surely, 2^42417522021 is an apocalyptic number.

It is an amenable number.

42417522021 is a deficient number, since it is larger than the sum of its proper divisors (25799668443).

42417522021 is a wasteful number, since it uses less digits than its factorization.

42417522021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5595289 (or 5595270 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The spelling of 42417522021 in words is "forty-two billion, four hundred seventeen million, five hundred twenty-two thousand, twenty-one".