421280571 has 4 divisors (see below), whose sum is σ = 561707432. Its totient is φ = 280853712.

The previous prime is 421280569. The next prime is 421280633. The reversal of 421280571 is 175082124.

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

It is not a de Polignac number, because 421280571 - 2¹ = 421280569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421280771) 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, 70213426 + ... + 70213431.

It is an arithmetic number, because the mean of its divisors is an integer number (140426858).

Almost surely, 2^421280571 is an apocalyptic number.

421280571 is a deficient number, since it is larger than the sum of its proper divisors (140426861).

421280571 is a wasteful number, since it uses less digits than its factorization.

421280571 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140426860.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 421280571 is about 20525.1204868571. The cubic root of 421280571 is about 749.6475802041.

The spelling of 421280571 in words is "four hundred twenty-one million, two hundred eighty thousand, five hundred seventy-one".