120402173 has 2 divisors, whose sum is σ = 120402174. Its totient is φ = 120402172.

The previous prime is 120402169. The next prime is 120402209. The reversal of 120402173 is 371204021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78889924 + 41512249 = 8882^2 + 6443^2 .

It is a cyclic number.

It is not a de Polignac number, because 120402173 - 2² = 120402169 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120402133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60201086 + 60201087.

It is an arithmetic number, because the mean of its divisors is an integer number (60201087).

Almost surely, 2^120402173 is an apocalyptic number.

It is an amenable number.

120402173 is a deficient number, since it is larger than the sum of its proper divisors (1).

120402173 is an equidigital number, since it uses as much as digits as its factorization.

120402173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 120402173 is about 10972.7923975623. The cubic root of 120402173 is about 493.7928248280.

Adding to 120402173 its reverse (371204021), we get a palindrome (491606194).

The spelling of 120402173 in words is "one hundred twenty million, four hundred two thousand, one hundred seventy-three".