135419257 has 2 divisors, whose sum is σ = 135419258. Its totient is φ = 135419256.

The previous prime is 135419243. The next prime is 135419279. The reversal of 135419257 is 752914531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108076816 + 27342441 = 10396^2 + 5229^2 .

It is a cyclic number.

It is not a de Polignac number, because 135419257 - 2²³ = 127030649 is a prime.

It is not a weakly prime, because it can be changed into another prime (135419227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67709628 + 67709629.

It is an arithmetic number, because the mean of its divisors is an integer number (67709629).

Almost surely, 2^135419257 is an apocalyptic number.

It is an amenable number.

135419257 is a deficient number, since it is larger than the sum of its proper divisors (1).

135419257 is an equidigital number, since it uses as much as digits as its factorization.

135419257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 37.

The square root of 135419257 is about 11636.9780011823. The cubic root of 135419257 is about 513.5232866005.

The spelling of 135419257 in words is "one hundred thirty-five million, four hundred nineteen thousand, two hundred fifty-seven".