420758690 has 16 divisors (see below), whose sum is σ = 826217280. Its totient is φ = 153003120.

The previous prime is 420758683. The next prime is 420758713. The reversal of 420758690 is 96857024.

It is a super-2 number, since 2×420758690² = 354075750421032200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1912430 + ... + 1912649.

It is an arithmetic number, because the mean of its divisors is an integer number (51638580).

Almost surely, 2^420758690 is an apocalyptic number.

420758690 is a deficient number, since it is larger than the sum of its proper divisors (405458590).

420758690 is a wasteful number, since it uses less digits than its factorization.

420758690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3825097.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 420758690 is about 20512.4033209178. The cubic root of 420758690 is about 749.3378986307.

The spelling of 420758690 in words is "four hundred twenty million, seven hundred fifty-eight thousand, six hundred ninety".