420625039 has 4 divisors (see below), whose sum is σ = 420747760. Its totient is φ = 420502320.

The previous prime is 420625031. The next prime is 420625057. The reversal of 420625039 is 930526024.

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 420625039 - 2³ = 420625031 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 420625039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420625031) 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, 56067 + ... + 63124.

It is an arithmetic number, because the mean of its divisors is an integer number (105186940).

Almost surely, 2^420625039 is an apocalyptic number.

420625039 is a deficient number, since it is larger than the sum of its proper divisors (122721).

420625039 is a wasteful number, since it uses less digits than its factorization.

420625039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122720.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 420625039 is about 20509.1452527891. The cubic root of 420625039 is about 749.2585496137.

The spelling of 420625039 in words is "four hundred twenty million, six hundred twenty-five thousand, thirty-nine".