154830121 has 4 divisors (see below), whose sum is σ = 154868112. Its totient is φ = 154792132.

The previous prime is 154830083. The next prime is 154830127. The reversal of 154830121 is 121038451.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 154830121 - 2¹³ = 154821929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154830127) 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, 12031 + ... + 21316.

It is an arithmetic number, because the mean of its divisors is an integer number (38717028).

Almost surely, 2^154830121 is an apocalyptic number.

It is an amenable number.

154830121 is a deficient number, since it is larger than the sum of its proper divisors (37991).

154830121 is an equidigital number, since it uses as much as digits as its factorization.

154830121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37990.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 154830121 is about 12443.0752227896. The cubic root of 154830121 is about 536.9722193402.

Adding to 154830121 its reverse (121038451), we get a palindrome (275868572).

The spelling of 154830121 in words is "one hundred fifty-four million, eight hundred thirty thousand, one hundred twenty-one".