154129857 has 16 divisors (see below), whose sum is σ = 235040640. Its totient is φ = 88008192.

The previous prime is 154129849. The next prime is 154129879. The reversal of 154129857 is 758921451.

It is not a de Polignac number, because 154129857 - 2³ = 154129849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (154129847) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46119 + ... + 49347.

It is an arithmetic number, because the mean of its divisors is an integer number (14690040).

Almost surely, 2^154129857 is an apocalyptic number.

It is an amenable number.

154129857 is a deficient number, since it is larger than the sum of its proper divisors (80910783).

154129857 is a wasteful number, since it uses less digits than its factorization.

154129857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5512.

The product of its digits is 100800, while the sum is 42.

The square root of 154129857 is about 12414.9046311279. The cubic root of 154129857 is about 536.1614584228.

The spelling of 154129857 in words is "one hundred fifty-four million, one hundred twenty-nine thousand, eight hundred fifty-seven".