154423121 has 16 divisors (see below), whose sum is σ = 169827840. Its totient is φ = 139779840.

The previous prime is 154423111. The next prime is 154423123. The reversal of 154423121 is 121324451.

It is a cyclic number.

It is not a de Polignac number, because 154423121 - 2¹⁰ = 154422097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154423123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93515 + ... + 95151.

It is an arithmetic number, because the mean of its divisors is an integer number (10614240).

Almost surely, 2^154423121 is an apocalyptic number.

It is an amenable number.

154423121 is a deficient number, since it is larger than the sum of its proper divisors (15404719).

154423121 is a wasteful number, since it uses less digits than its factorization.

154423121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864.

The product of its digits is 960, while the sum is 23.

The square root of 154423121 is about 12426.7099829360. The cubic root of 154423121 is about 536.5012957458.

Adding to 154423121 its reverse (121324451), we get a palindrome (275747572).

The spelling of 154423121 in words is "one hundred fifty-four million, four hundred twenty-three thousand, one hundred twenty-one".