120661154 has 4 divisors (see below), whose sum is σ = 180991734. Its totient is φ = 60330576.

The previous prime is 120661133. The next prime is 120661193. The reversal of 120661154 is 451166021.

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

It can be written as a sum of positive squares in only one way, i.e., 102556129 + 18105025 = 10127^2 + 4255^2 .

It is a super-2 number, since 2×120661154² = 29118228169223432, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30165287 + ... + 30165290.

Almost surely, 2^120661154 is an apocalyptic number.

120661154 is a deficient number, since it is larger than the sum of its proper divisors (60330580).

120661154 is an equidigital number, since it uses as much as digits as its factorization.

120661154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60330579.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 120661154 is about 10984.5871110388. The cubic root of 120661154 is about 494.1466151712.

The spelling of 120661154 in words is "one hundred twenty million, six hundred sixty-one thousand, one hundred fifty-four".