420431426 has 16 divisors (see below), whose sum is σ = 635572608. Its totient is φ = 208580400.

The previous prime is 420431423. The next prime is 420431503. The reversal of 420431426 is 624134024.

It is a junction number, because it is equal to n+sod(n) for n = 420431395 and 420431404.

It is not an unprimeable number, because it can be changed into a prime (420431423) 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, 156071 + ... + 158741.

It is an arithmetic number, because the mean of its divisors is an integer number (39723288).

Almost surely, 2^420431426 is an apocalyptic number.

420431426 is a deficient number, since it is larger than the sum of its proper divisors (215141182).

420431426 is a wasteful number, since it uses less digits than its factorization.

420431426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3257.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 420431426 is about 20504.4245469118. The cubic root of 420431426 is about 749.1435711525.

The spelling of 420431426 in words is "four hundred twenty million, four hundred thirty-one thousand, four hundred twenty-six".