420379685 has 16 divisors (see below), whose sum is σ = 568069632. Its totient is φ = 295867200.

The previous prime is 420379649. The next prime is 420379721. The reversal of 420379685 is 586973024.

It is an interprime number because it is at equal distance from previous prime (420379649) and next prime (420379721).

It is not a de Polignac number, because 420379685 - 2¹⁶ = 420314149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121574 + ... + 124983.

It is an arithmetic number, because the mean of its divisors is an integer number (35504352).

Almost surely, 2^420379685 is an apocalyptic number.

It is an amenable number.

420379685 is a deficient number, since it is larger than the sum of its proper divisors (147689947).

420379685 is a wasteful number, since it uses less digits than its factorization.

420379685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246604.

The product of its (nonzero) digits is 362880, while the sum is 44.

The square root of 420379685 is about 20503.1628047967. The cubic root of 420379685 is about 749.1128384136.

The spelling of 420379685 in words is "four hundred twenty million, three hundred seventy-nine thousand, six hundred eighty-five".