421434527 has 4 divisors (see below), whose sum is σ = 422934576. Its totient is φ = 419934480.

The previous prime is 421434523. The next prime is 421434547. The reversal of 421434527 is 725434124.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 421434527 - 2² = 421434523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421434493 and 421434502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421434523) 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, 749603 + ... + 750164.

It is an arithmetic number, because the mean of its divisors is an integer number (105733644).

Almost surely, 2^421434527 is an apocalyptic number.

421434527 is a deficient number, since it is larger than the sum of its proper divisors (1500049).

421434527 is a wasteful number, since it uses less digits than its factorization.

421434527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1500048.

The product of its digits is 26880, while the sum is 32.

The square root of 421434527 is about 20528.8705729273. The cubic root of 421434527 is about 749.7388880676.

The spelling of 421434527 in words is "four hundred twenty-one million, four hundred thirty-four thousand, five hundred twenty-seven".