254102921 has 4 divisors (see below), whose sum is σ = 256958100. Its totient is φ = 251247744.

The previous prime is 254102917. The next prime is 254102983. The reversal of 254102921 is 129201452.

254102921 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.

It can be written as a sum of positive squares in 2 ways, for example, as 47059600 + 207043321 = 6860^2 + 14389^2 .

It is a cyclic number.

It is not a de Polignac number, because 254102921 - 2² = 254102917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (254107921) 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, 1427456 + ... + 1427633.

It is an arithmetic number, because the mean of its divisors is an integer number (64239525).

Almost surely, 2^254102921 is an apocalyptic number.

It is an amenable number.

254102921 is a deficient number, since it is larger than the sum of its proper divisors (2855179).

254102921 is an equidigital number, since it uses as much as digits as its factorization.

254102921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2855178.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 254102921 is about 15940.6060424314. The cubic root of 254102921 is about 633.3880798166.

The spelling of 254102921 in words is "two hundred fifty-four million, one hundred two thousand, nine hundred twenty-one".