423907770724 has 9 divisors (see below), whose sum is σ = 741840877561. Its totient is φ = 211953234280.

The previous prime is 423907770721. The next prime is 423907770739. The reversal of 423907770724 is 427077709324.

It is a happy number.

The square root of 423907770724 is 651082.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 71119289124 + 352788481600 = 266682^2 + 593960^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (423907770721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 1139394 + ... + 1464934.

Almost surely, 2^423907770724 is an apocalyptic number.

423907770724 is the 651082-nd square number.

It is an amenable number.

423907770724 is a deficient number, since it is larger than the sum of its proper divisors (317933106837).

423907770724 is an frugal number, since it uses more digits than its factorization.

423907770724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651086 (or 325543 counting only the distinct ones).

The product of its (nonzero) digits is 4148928, while the sum is 52.

The spelling of 423907770724 in words is "four hundred twenty-three billion, nine hundred seven million, seven hundred seventy thousand, seven hundred twenty-four".