120461721 has 4 divisors (see below), whose sum is σ = 160615632. Its totient is φ = 80307812.

The previous prime is 120461717. The next prime is 120461723. The reversal of 120461721 is 127164021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120461721 - 2² = 120461717 is a prime.

It is a super-2 number, since 2×120461721² = 29022052452563682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120461691 and 120461700.

It is not an unprimeable number, because it can be changed into a prime (120461723) 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, 20076951 + ... + 20076956.

It is an arithmetic number, because the mean of its divisors is an integer number (40153908).

Almost surely, 2^120461721 is an apocalyptic number.

It is an amenable number.

120461721 is a deficient number, since it is larger than the sum of its proper divisors (40153911).

120461721 is an equidigital number, since it uses as much as digits as its factorization.

120461721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40153910.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 120461721 is about 10975.5055008870. The cubic root of 120461721 is about 493.8742174036.

The spelling of 120461721 in words is "one hundred twenty million, four hundred sixty-one thousand, seven hundred twenty-one".