420735706 has 16 divisors (see below), whose sum is σ = 634394304. Its totient is φ = 209274624.

The previous prime is 420735673. The next prime is 420735743. The reversal of 420735706 is 607537024.

It is a happy number.

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, 510811 + ... + 511633.

It is an arithmetic number, because the mean of its divisors is an integer number (39649644).

Almost surely, 2^420735706 is an apocalyptic number.

420735706 is a deficient number, since it is larger than the sum of its proper divisors (213658598).

420735706 is a wasteful number, since it uses less digits than its factorization.

420735706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1845.

The product of its (nonzero) digits is 35280, while the sum is 34.

The square root of 420735706 is about 20511.8430668724. The cubic root of 420735706 is about 749.3242541544.

The spelling of 420735706 in words is "four hundred twenty million, seven hundred thirty-five thousand, seven hundred six".