421672527 has 8 divisors (see below), whose sum is σ = 624700080. Its totient is φ = 281115000.

The previous prime is 421672523. The next prime is 421672553. The reversal of 421672527 is 725276124.

It is a happy number.

It is not a de Polignac number, because 421672527 - 2² = 421672523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 421672491 and 421672500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421672523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7808724 + ... + 7808777.

It is an arithmetic number, because the mean of its divisors is an integer number (78087510).

Almost surely, 2^421672527 is an apocalyptic number.

421672527 is a deficient number, since it is larger than the sum of its proper divisors (203027553).

421672527 is a wasteful number, since it uses less digits than its factorization.

421672527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15617510 (or 15617504 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 421672527 is about 20534.6664691687. Note that the first 3 decimals coincide. The cubic root of 421672527 is about 749.8799968000.

The spelling of 421672527 in words is "four hundred twenty-one million, six hundred seventy-two thousand, five hundred twenty-seven".