420558357 has 4 divisors (see below), whose sum is σ = 560744480. Its totient is φ = 280372236.

The previous prime is 420558343. The next prime is 420558367. The reversal of 420558357 is 753855024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 420558357 - 2¹⁴ = 420541973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420558337) 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, 70093057 + ... + 70093062.

It is an arithmetic number, because the mean of its divisors is an integer number (140186120).

Almost surely, 2^420558357 is an apocalyptic number.

It is an amenable number.

420558357 is a deficient number, since it is larger than the sum of its proper divisors (140186123).

420558357 is a wasteful number, since it uses less digits than its factorization.

420558357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140186122.

The product of its (nonzero) digits is 168000, while the sum is 39.

The square root of 420558357 is about 20507.5195233358. The cubic root of 420558357 is about 749.2189540164.

The spelling of 420558357 in words is "four hundred twenty million, five hundred fifty-eight thousand, three hundred fifty-seven".