154142879 has 4 divisors (see below), whose sum is σ = 168155880. Its totient is φ = 140129880.

The previous prime is 154142873. The next prime is 154142887. The reversal of 154142879 is 978241451.

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

It is not a de Polignac number, because 154142879 - 2²⁰ = 153094303 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 (154142873) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 7006484 + ... + 7006505.

It is an arithmetic number, because the mean of its divisors is an integer number (42038970).

Almost surely, 2^154142879 is an apocalyptic number.

154142879 is a deficient number, since it is larger than the sum of its proper divisors (14013001).

154142879 is a wasteful number, since it uses less digits than its factorization.

154142879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14013000.

The product of its digits is 80640, while the sum is 41.

The square root of 154142879 is about 12415.4290703141. The cubic root of 154142879 is about 536.1765575910.

The spelling of 154142879 in words is "one hundred fifty-four million, one hundred forty-two thousand, eight hundred seventy-nine".