254742603721 has 4 divisors (see below), whose sum is σ = 268150109200. Its totient is φ = 241335098244.

The previous prime is 254742603641. The next prime is 254742603737. The reversal of 254742603721 is 127306247452.

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 254742603721 - 2²⁵ = 254709049289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (254742609721) 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, 6703752711 + ... + 6703752748.

It is an arithmetic number, because the mean of its divisors is an integer number (67037527300).

Almost surely, 2^254742603721 is an apocalyptic number.

It is an amenable number.

254742603721 is a deficient number, since it is larger than the sum of its proper divisors (13407505479).

254742603721 is a wasteful number, since it uses less digits than its factorization.

254742603721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13407505478.

The product of its (nonzero) digits is 564480, while the sum is 43.

The spelling of 254742603721 in words is "two hundred fifty-four billion, seven hundred forty-two million, six hundred three thousand, seven hundred twenty-one".