420434797 has 4 divisors (see below), whose sum is σ = 421682716. Its totient is φ = 419186880.

The previous prime is 420434771. The next prime is 420434801. The reversal of 420434797 is 797434024.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 297424516 + 123010281 = 17246^2 + 11091^2 .

It is a cyclic number.

It is not a de Polignac number, because 420434797 - 2¹⁹ = 419910509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420434297) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623454 + ... + 624127.

It is an arithmetic number, because the mean of its divisors is an integer number (105420679).

Almost surely, 2^420434797 is an apocalyptic number.

It is an amenable number.

420434797 is a deficient number, since it is larger than the sum of its proper divisors (1247919).

420434797 is a wasteful number, since it uses less digits than its factorization.

420434797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247918.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 420434797 is about 20504.5067485175. The cubic root of 420434797 is about 749.1455733468.

The spelling of 420434797 in words is "four hundred twenty million, four hundred thirty-four thousand, seven hundred ninety-seven".