154126139 has 4 divisors (see below), whose sum is σ = 154163856. Its totient is φ = 154088424.

The previous prime is 154126123. The next prime is 154126163. The reversal of 154126139 is 931621451.

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

It is a cyclic number.

It is not a de Polignac number, because 154126139 - 2⁴ = 154126123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154126169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11864 + ... + 21189.

It is an arithmetic number, because the mean of its divisors is an integer number (38540964).

Almost surely, 2^154126139 is an apocalyptic number.

154126139 is a deficient number, since it is larger than the sum of its proper divisors (37717).

154126139 is an equidigital number, since it uses as much as digits as its factorization.

154126139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37716.

The product of its digits is 6480, while the sum is 32.

The square root of 154126139 is about 12414.7548908547. The cubic root of 154126139 is about 536.1571472003.

The spelling of 154126139 in words is "one hundred fifty-four million, one hundred twenty-six thousand, one hundred thirty-nine".