154344121 has 2 divisors, whose sum is σ = 154344122. Its totient is φ = 154344120.

The previous prime is 154344103. The next prime is 154344221. The reversal of 154344121 is 121443451.

154344121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109935225 + 44408896 = 10485^2 + 6664^2 .

It is an emirp because it is prime and its reverse (121443451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154344121 - 2⁵ = 154344089 is a prime.

It is not a weakly prime, because it can be changed into another prime (154344221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77172060 + 77172061.

It is an arithmetic number, because the mean of its divisors is an integer number (77172061).

Almost surely, 2^154344121 is an apocalyptic number.

It is an amenable number.

154344121 is a deficient number, since it is larger than the sum of its proper divisors (1).

154344121 is an equidigital number, since it uses as much as digits as its factorization.

154344121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1920, while the sum is 25.

The square root of 154344121 is about 12423.5309393103. The cubic root of 154344121 is about 536.4097921081.

Adding to 154344121 its reverse (121443451), we get a palindrome (275787572).

The spelling of 154344121 in words is "one hundred fifty-four million, three hundred forty-four thousand, one hundred twenty-one".