154123427 has 4 divisors (see below), whose sum is σ = 154437816. Its totient is φ = 153809040.

The previous prime is 154123423. The next prime is 154123457. The reversal of 154123427 is 724321451.

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 154123427 - 2² = 154123423 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 154123427.

It is not an unprimeable number, because it can be changed into a prime (154123423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156458 + ... + 157439.

It is an arithmetic number, because the mean of its divisors is an integer number (38609454).

Almost surely, 2^154123427 is an apocalyptic number.

154123427 is a deficient number, since it is larger than the sum of its proper divisors (314389).

154123427 is an equidigital number, since it uses as much as digits as its factorization.

154123427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314388.

The product of its digits is 6720, while the sum is 29.

The square root of 154123427 is about 12414.6456655033. The cubic root of 154123427 is about 536.1540024456.

Adding to 154123427 its reverse (724321451), we get a palindrome (878444878).

The spelling of 154123427 in words is "one hundred fifty-four million, one hundred twenty-three thousand, four hundred twenty-seven".