421525124 has 12 divisors (see below), whose sum is σ = 741492444. Its totient is φ = 209670144.

The previous prime is 421525123. The next prime is 421525129.

421525124 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 27899524 + 393625600 = 5282^2 + 19840^2 .

It is a junction number, because it is equal to n+sod(n) for n = 421525093 and 421525102.

It is not an unprimeable number, because it can be changed into a prime (421525123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 272237 + ... + 273780.

It is an arithmetic number, because the mean of its divisors is an integer number (61791037).

Almost surely, 2^421525124 is an apocalyptic number.

It is an amenable number.

421525124 is a deficient number, since it is larger than the sum of its proper divisors (319967320).

421525124 is a wasteful number, since it uses less digits than its factorization.

421525124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546214 (or 546212 counting only the distinct ones).

The product of its digits is 3200, while the sum is 26.

The square root of 421525124 is about 20531.0770297128. The cubic root of 421525124 is about 749.7926087312.

The spelling of 421525124 in words is "four hundred twenty-one million, five hundred twenty-five thousand, one hundred twenty-four".