120172045 has 8 divisors (see below), whose sum is σ = 164807424. Its totient is φ = 82403664.

The previous prime is 120172009. The next prime is 120172049. The reversal of 120172045 is 540271021.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120172045 - 2¹³ = 120163853 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 (120172049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1716709 + ... + 1716778.

It is an arithmetic number, because the mean of its divisors is an integer number (20600928).

Almost surely, 2^120172045 is an apocalyptic number.

It is an amenable number.

120172045 is a deficient number, since it is larger than the sum of its proper divisors (44635379).

120172045 is an equidigital number, since it uses as much as digits as its factorization.

120172045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3433499.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 120172045 is about 10962.3010814336. The cubic root of 120172045 is about 493.4780242238.

The spelling of 120172045 in words is "one hundred twenty million, one hundred seventy-two thousand, forty-five".