421438146839025 has 48 divisors (see below), whose sum is σ = 737767392882624. Its totient is φ = 211544639610880.

The previous prime is 421438146838993. The next prime is 421438146839063. The reversal of 421438146839025 is 520938641834124.

It is not a de Polignac number, because 421438146839025 - 2⁵ = 421438146838993 is a prime.

It is a super-2 number, since 2×421438146839025² (a number of 30 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 421438146839025.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 512895562 + ... + 513716588.

It is an arithmetic number, because the mean of its divisors is an integer number (15370154018388).

Almost surely, 2^{421438146839025} is an apocalyptic number.

It is an amenable number.

421438146839025 is a deficient number, since it is larger than the sum of its proper divisors (316329246043599).

421438146839025 is a wasteful number, since it uses less digits than its factorization.

421438146839025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223650 (or 1223645 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 60.

The spelling of 421438146839025 in words is "four hundred twenty-one trillion, four hundred thirty-eight billion, one hundred forty-six million, eight hundred thirty-nine thousand, twenty-five".