421134525 has 96 divisors (see below), whose sum is σ = 930892800. Its totient is φ = 182347200.

The previous prime is 421134517. The next prime is 421134533. The reversal of 421134525 is 525431124.

421134525 is a `hidden beast` number, since 4 + 2 + 1 + 134 + 525 = 666.

It is an interprime number because it is at equal distance from previous prime (421134517) and next prime (421134533).

It is not a de Polignac number, because 421134525 - 2³ = 421134517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 87430 + ... + 92120.

It is an arithmetic number, because the mean of its divisors is an integer number (9696800).

Almost surely, 2^421134525 is an apocalyptic number.

421134525 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

421134525 is an abundant number, since it is smaller than the sum of its proper divisors (509758275).

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

421134525 is a wasteful number, since it uses less digits than its factorization.

421134525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4736 (or 4725 counting only the distinct ones).

The product of its digits is 4800, while the sum is 27.

The square root of 421134525 is about 20521.5624405161. The cubic root of 421134525 is about 749.5609430221.

Adding to 421134525 its reverse (525431124), we get a palindrome (946565649).

The spelling of 421134525 in words is "four hundred twenty-one million, one hundred thirty-four thousand, five hundred twenty-five".