421074587 has 4 divisors (see below), whose sum is σ = 422403216. Its totient is φ = 419745960.

The previous prime is 421074539. The next prime is 421074607. The reversal of 421074587 is 785470124.

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 421074587 - 2²⁰ = 420026011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 421074587.

It is not an unprimeable number, because it can be changed into a prime (421074527) 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, 663839 + ... + 664472.

It is an arithmetic number, because the mean of its divisors is an integer number (105600804).

Almost surely, 2^421074587 is an apocalyptic number.

421074587 is a deficient number, since it is larger than the sum of its proper divisors (1328629).

421074587 is a wasteful number, since it uses less digits than its factorization.

421074587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328628.

The product of its (nonzero) digits is 62720, while the sum is 38.

The square root of 421074587 is about 20520.1020221635. The cubic root of 421074587 is about 749.5253808975.

The spelling of 421074587 in words is "four hundred twenty-one million, seventy-four thousand, five hundred eighty-seven".