420192772 has 6 divisors (see below), whose sum is σ = 735337358. Its totient is φ = 210096384.

The previous prime is 420192713. The next prime is 420192779. The reversal of 420192772 is 277291024.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 337309956 + 82882816 = 18366^2 + 9104^2 .

It is not an unprimeable number, because it can be changed into a prime (420192779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52524093 + ... + 52524100.

Almost surely, 2^420192772 is an apocalyptic number.

It is an amenable number.

420192772 is a deficient number, since it is larger than the sum of its proper divisors (315144586).

420192772 is a wasteful number, since it uses less digits than its factorization.

420192772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105048197 (or 105048195 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 420192772 is about 20498.6041475999. The cubic root of 420192772 is about 749.0017961898.

The spelling of 420192772 in words is "four hundred twenty million, one hundred ninety-two thousand, seven hundred seventy-two".