120154861 has 8 divisors (see below), whose sum is σ = 128966904. Its totient is φ = 111536640.

The previous prime is 120154847. The next prime is 120154871. The reversal of 120154861 is 168451021.

It can be written as a sum of positive squares in 4 ways, for example, as 77774761 + 42380100 = 8819^2 + 6510^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 120154861 - 2²⁵ = 86600429 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 (120154871) 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, 47170 + ... + 49651.

It is an arithmetic number, because the mean of its divisors is an integer number (16120863).

Almost surely, 2^120154861 is an apocalyptic number.

It is an amenable number.

120154861 is a deficient number, since it is larger than the sum of its proper divisors (8812043).

120154861 is an equidigital number, since it uses as much as digits as its factorization.

120154861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96911.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 120154861 is about 10961.5172763628. The cubic root of 120154861 is about 493.4545014746.

The spelling of 120154861 in words is "one hundred twenty million, one hundred fifty-four thousand, eight hundred sixty-one".