2390700423721 has 3 divisors (see below), whose sum is σ = 2390701969911. Its totient is φ = 2390698877532.

The previous prime is 2390700423707. The next prime is 2390700423743. The reversal of 2390700423721 is 1273240070932.

It is a happy number.

The square root of 2390700423721 is 1546189.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 16450884121 + 2374249539600 = 128261^2 + 1540860^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2390700423721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2390700423701) 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, 773095 + ... + 2319283.

It is an arithmetic number, because the mean of its divisors is an integer number (796900656637).

Almost surely, 2^{2390700423721} is an apocalyptic number.

2390700423721 is the 1546189-th square number.

2390700423721 is the 773095-th centered octagonal number.

It is an amenable number.

2390700423721 is a deficient number, since it is larger than the sum of its proper divisors (1546190).

2390700423721 is an frugal number, since it uses more digits than its factorization.

2390700423721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3092378 (or 1546189 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 40.

The spelling of 2390700423721 in words is "two trillion, three hundred ninety billion, seven hundred million, four hundred twenty-three thousand, seven hundred twenty-one".