120456890761 has 3 divisors (see below), whose sum is σ = 120457237831. Its totient is φ = 120456543692.

The previous prime is 120456890711. The next prime is 120456890773. The reversal of 120456890761 is 167098654021.

It is a happy number.

The square root of 120456890761 is 347069.

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, and also an emirpimes, since its reverse is a distinct semiprime: 167098654021 = 13 ⋅12853742617.

It can be written as a sum of positive squares in only one way, i.e., 117011200761 + 3445690000 = 342069^2 + 58700^2 .

It is a de Polignac number, because none of the positive numbers 2^k-120456890761 is a prime.

It is a super-4 number, since 4×120456890761⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120456890711) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 173535 + ... + 520603.

Almost surely, 2^120456890761 is an apocalyptic number.

120456890761 is the 347069-th square number.

120456890761 is the 173535-th centered octagonal number.

It is an amenable number.

120456890761 is a deficient number, since it is larger than the sum of its proper divisors (347070).

120456890761 is an frugal number, since it uses more digits than its factorization.

120456890761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694138 (or 347069 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 49.

Multiplying 120456890761 by its sum of digits (49), we get a square (5902387647289 = 2429483²).

The spelling of 120456890761 in words is "one hundred twenty billion, four hundred fifty-six million, eight hundred ninety thousand, seven hundred sixty-one".