120709326421 has 4 divisors (see below), whose sum is σ = 127809875052. Its totient is φ = 113608777792.

The previous prime is 120709326371. The next prime is 120709326431. The reversal of 120709326421 is 124623907021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 102969750321 + 17739576100 = 320889^2 + 133190^2 .

It is a cyclic number.

It is not a de Polignac number, because 120709326421 - 2⁷ = 120709326293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120709326431) 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, 3550274290 + ... + 3550274323.

It is an arithmetic number, because the mean of its divisors is an integer number (31952468763).

Almost surely, 2^120709326421 is an apocalyptic number.

It is an amenable number.

120709326421 is a deficient number, since it is larger than the sum of its proper divisors (7100548631).

120709326421 is an equidigital number, since it uses as much as digits as its factorization.

120709326421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7100548630.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 120709326421 in words is "one hundred twenty billion, seven hundred nine million, three hundred twenty-six thousand, four hundred twenty-one".