154241421 has 4 divisors (see below), whose sum is σ = 205655232. Its totient is φ = 102827612.

The previous prime is 154241413. The next prime is 154241453. The reversal of 154241421 is 124142451.

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 154241421 - 2³ = 154241413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 154241391 and 154241400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154241621) 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, 25706901 + ... + 25706906.

It is an arithmetic number, because the mean of its divisors is an integer number (51413808).

Almost surely, 2^154241421 is an apocalyptic number.

It is an amenable number.

154241421 is a deficient number, since it is larger than the sum of its proper divisors (51413811).

154241421 is an equidigital number, since it uses as much as digits as its factorization.

154241421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51413810.

The product of its digits is 1280, while the sum is 24.

The square root of 154241421 is about 12419.3969660366. The cubic root of 154241421 is about 536.2907906876.

Adding to 154241421 its reverse (124142451), we get a palindrome (278383872).

The spelling of 154241421 in words is "one hundred fifty-four million, two hundred forty-one thousand, four hundred twenty-one".