154214121 has 4 divisors (see below), whose sum is σ = 205618832. Its totient is φ = 102809412.

The previous prime is 154214111. The next prime is 154214129. The reversal of 154214121 is 121412451.

154214121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 154214121 - 2¹⁵ = 154181353 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (154214129) 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, 25702351 + ... + 25702356.

It is an arithmetic number, because the mean of its divisors is an integer number (51404708).

Almost surely, 2^154214121 is an apocalyptic number.

It is an amenable number.

154214121 is a deficient number, since it is larger than the sum of its proper divisors (51404711).

154214121 is an equidigital number, since it uses as much as digits as its factorization.

154214121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51404710.

The product of its digits is 320, while the sum is 21.

The square root of 154214121 is about 12418.2978302181. The cubic root of 154214121 is about 536.2591485119.

Adding to 154214121 its reverse (121412451), we get a palindrome (275626572).

The spelling of 154214121 in words is "one hundred fifty-four million, two hundred fourteen thousand, one hundred twenty-one".