420743406 has 32 divisors (see below), whose sum is σ = 852988320. Its totient is φ = 138338816.

The previous prime is 420743371. The next prime is 420743437. The reversal of 420743406 is 604347024.

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, 328840 + ... + 330116.

It is an arithmetic number, because the mean of its divisors is an integer number (26655885).

Almost surely, 2^420743406 is an apocalyptic number.

420743406 is an abundant number, since it is smaller than the sum of its proper divisors (432244914).

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

420743406 is a wasteful number, since it uses less digits than its factorization.

420743406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988.

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 420743406 is about 20512.0307624574. The cubic root of 420743406 is about 749.3288253230.

The spelling of 420743406 in words is "four hundred twenty million, seven hundred forty-three thousand, four hundred six".