420657371 has 4 divisors (see below), whose sum is σ = 420738552. Its totient is φ = 420576192.

The previous prime is 420657361. The next prime is 420657389. The reversal of 420657371 is 173756024.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-420657371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420657361) 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, 32246 + ... + 43371.

It is an arithmetic number, because the mean of its divisors is an integer number (105184638).

Almost surely, 2^420657371 is an apocalyptic number.

420657371 is a deficient number, since it is larger than the sum of its proper divisors (81181).

420657371 is an equidigital number, since it uses as much as digits as its factorization.

420657371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81180.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 420657371 is about 20509.9334713694. The cubic root of 420657371 is about 749.2777467644.

The spelling of 420657371 in words is "four hundred twenty million, six hundred fifty-seven thousand, three hundred seventy-one".