254122639 has 2 divisors, whose sum is σ = 254122640. Its totient is φ = 254122638.

The previous prime is 254122591. The next prime is 254122657. The reversal of 254122639 is 936221452.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 254122639 - 2¹³ = 254114447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (254120639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127061319 + 127061320.

It is an arithmetic number, because the mean of its divisors is an integer number (127061320).

Almost surely, 2^254122639 is an apocalyptic number.

254122639 is a deficient number, since it is larger than the sum of its proper divisors (1).

254122639 is an equidigital number, since it uses as much as digits as its factorization.

254122639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 25920, while the sum is 34.

The square root of 254122639 is about 15941.2245138195. The cubic root of 254122639 is about 633.4044627099.

The spelling of 254122639 in words is "two hundred fifty-four million, one hundred twenty-two thousand, six hundred thirty-nine".