420245774 has 8 divisors (see below), whose sum is σ = 678858600. Its totient is φ = 193959576.

The previous prime is 420245747. The next prime is 420245779. The reversal of 420245774 is 477542024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420245779) 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, 8081624 + ... + 8081675.

It is an arithmetic number, because the mean of its divisors is an integer number (84857325).

Almost surely, 2^420245774 is an apocalyptic number.

420245774 is a deficient number, since it is larger than the sum of its proper divisors (258612826).

420245774 is a wasteful number, since it uses less digits than its factorization.

420245774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16163314.

The product of its (nonzero) digits is 62720, while the sum is 35.

The square root of 420245774 is about 20499.8969265701. The cubic root of 420245774 is about 749.0332872313.

Adding to 420245774 its reverse (477542024), we get a palindrome (897787798).

The spelling of 420245774 in words is "four hundred twenty million, two hundred forty-five thousand, seven hundred seventy-four".