254418139 has 2 divisors, whose sum is σ = 254418140. Its totient is φ = 254418138.

The previous prime is 254418133. The next prime is 254418163. The reversal of 254418139 is 931814452.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 254418139 - 2¹¹ = 254416091 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 254418098 and 254418107.

It is not a weakly prime, because it can be changed into another prime (254418133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127209069 + 127209070.

It is an arithmetic number, because the mean of its divisors is an integer number (127209070).

Almost surely, 2^254418139 is an apocalyptic number.

254418139 is a deficient number, since it is larger than the sum of its proper divisors (1).

254418139 is an equidigital number, since it uses as much as digits as its factorization.

254418139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 37.

The square root of 254418139 is about 15950.4902432496. The cubic root of 254418139 is about 633.6498803257.

The spelling of 254418139 in words is "two hundred fifty-four million, four hundred eighteen thousand, one hundred thirty-nine".