254240039 has 4 divisors (see below), whose sum is σ = 257303256. Its totient is φ = 251176824.

The previous prime is 254240029. The next prime is 254240069. The reversal of 254240039 is 930042452.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-254240039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 254239993 and 254240020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (254240029) 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, 1531484 + ... + 1531649.

It is an arithmetic number, because the mean of its divisors is an integer number (64325814).

Almost surely, 2^254240039 is an apocalyptic number.

254240039 is a deficient number, since it is larger than the sum of its proper divisors (3063217).

254240039 is an equidigital number, since it uses as much as digits as its factorization.

254240039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3063216.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 254240039 is about 15944.9063653569. The cubic root of 254240039 is about 633.5019881093.

The spelling of 254240039 in words is "two hundred fifty-four million, two hundred forty thousand, thirty-nine".