42990201421 has 24 divisors (see below), whose sum is σ = 45067011072. Its totient is φ = 41003625600.

The previous prime is 42990201403. The next prime is 42990201427. The reversal of 42990201421 is 12410209924.

It is a happy number.

It is not a de Polignac number, because 42990201421 - 2¹³ = 42990193229 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42990201427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19892581 + ... + 19894741.

It is an arithmetic number, because the mean of its divisors is an integer number (1877792128).

Almost surely, 2^42990201421 is an apocalyptic number.

It is an amenable number.

42990201421 is a deficient number, since it is larger than the sum of its proper divisors (2076809651).

42990201421 is a wasteful number, since it uses less digits than its factorization.

42990201421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513 (or 2482 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 42990201421 in words is "forty-two billion, nine hundred ninety million, two hundred one thousand, four hundred twenty-one".