254136502121 has 4 divisors (see below), whose sum is σ = 254366908032. Its totient is φ = 253906096212.

The previous prime is 254136502057. The next prime is 254136502133. The reversal of 254136502121 is 121205631452.

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 254136502121 - 2⁶ = 254136502057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (254136502141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115201301 + ... + 115203506.

It is an arithmetic number, because the mean of its divisors is an integer number (63591727008).

Almost surely, 2^254136502121 is an apocalyptic number.

It is an amenable number.

254136502121 is a deficient number, since it is larger than the sum of its proper divisors (230405911).

254136502121 is a wasteful number, since it uses less digits than its factorization.

254136502121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230405910.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 254136502121 in words is "two hundred fifty-four billion, one hundred thirty-six million, five hundred two thousand, one hundred twenty-one".