154120661 has 8 divisors (see below), whose sum is σ = 160372224. Its totient is φ = 147993040.

The previous prime is 154120649. The next prime is 154120663. The reversal of 154120661 is 166021451.

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 154120661 - 2¹⁴ = 154104277 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 154120661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154120663) 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, 28445 + ... + 33426.

It is an arithmetic number, because the mean of its divisors is an integer number (20046528).

Almost surely, 2^154120661 is an apocalyptic number.

It is an amenable number.

154120661 is a deficient number, since it is larger than the sum of its proper divisors (6251563).

154120661 is an equidigital number, since it uses as much as digits as its factorization.

154120661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61971.

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

The square root of 154120661 is about 12414.5342643210. The cubic root of 154120661 is about 536.1507950360.

The spelling of 154120661 in words is "one hundred fifty-four million, one hundred twenty thousand, six hundred sixty-one".