421546125 has 128 divisors (see below), whose sum is σ = 942649344. Its totient is φ = 161568000.

The previous prime is 421546121. The next prime is 421546129. The reversal of 421546125 is 521645124.

It is an interprime number because it is at equal distance from previous prime (421546121) and next prime (421546129).

It is not a de Polignac number, because 421546125 - 2² = 421546121 is a prime.

It is a super-2 number, since 2×421546125² = 355402271005031250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 421546092 and 421546101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421546121) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 374814 + ... + 375936.

It is an arithmetic number, because the mean of its divisors is an integer number (7364448).

Almost surely, 2^421546125 is an apocalyptic number.

It is an amenable number.

421546125 is an abundant number, since it is smaller than the sum of its proper divisors (521103219).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421546125 is a wasteful number, since it uses less digits than its factorization.

421546125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172 (or 1162 counting only the distinct ones).

The product of its digits is 9600, while the sum is 30.

The square root of 421546125 is about 20531.5884675297. The cubic root of 421546125 is about 749.8050604469.

The spelling of 421546125 in words is "four hundred twenty-one million, five hundred forty-six thousand, one hundred twenty-five".