420204774 has 32 divisors (see below), whose sum is σ = 925726464. Its totient is φ = 126096480.

The previous prime is 420204749. The next prime is 420204787. The reversal of 420204774 is 477402024.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 24109 + ... + 37704.

It is an arithmetic number, because the mean of its divisors is an integer number (28928952).

Almost surely, 2^420204774 is an apocalyptic number.

420204774 is an abundant number, since it is smaller than the sum of its proper divisors (505521690).

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

420204774 is a wasteful number, since it uses less digits than its factorization.

420204774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61932.

The product of its (nonzero) digits is 12544, while the sum is 30.

The square root of 420204774 is about 20498.8968971503. The cubic root of 420204774 is about 749.0089273881.

Adding to 420204774 its reverse (477402024), we get a palindrome (897606798).

The spelling of 420204774 in words is "four hundred twenty million, two hundred four thousand, seven hundred seventy-four".