420634146 has 16 divisors (see below), whose sum is σ = 842785344. Its totient is φ = 139958544.

The previous prime is 420634139. The next prime is 420634147. The reversal of 420634146 is 641436024.

It is a super-2 number, since 2×420634146² = 353866169562298632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (420634147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59590 + ... + 66273.

It is an arithmetic number, because the mean of its divisors is an integer number (52674084).

Almost surely, 2^420634146 is an apocalyptic number.

420634146 is an abundant number, since it is smaller than the sum of its proper divisors (422151198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420634146 is a wasteful number, since it uses less digits than its factorization.

420634146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126425.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 420634146 is about 20509.3672744919. The cubic root of 420634146 is about 749.2639570017.

The spelling of 420634146 in words is "four hundred twenty million, six hundred thirty-four thousand, one hundred forty-six".