135422491 has 2 divisors, whose sum is σ = 135422492. Its totient is φ = 135422490.

The previous prime is 135422461. The next prime is 135422509. The reversal of 135422491 is 194224531.

It is a strong prime.

It is an emirp because it is prime and its reverse (194224531) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135422491 is a prime.

It is equal to p_7668013 and since 135422491 and 7668013 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (135422461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67711245 + 67711246.

It is an arithmetic number, because the mean of its divisors is an integer number (67711246).

Almost surely, 2^135422491 is an apocalyptic number.

135422491 is a deficient number, since it is larger than the sum of its proper divisors (1).

135422491 is an equidigital number, since it uses as much as digits as its factorization.

135422491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

The square root of 135422491 is about 11637.1169539538. The cubic root of 135422491 is about 513.5273744511.

The spelling of 135422491 in words is "one hundred thirty-five million, four hundred twenty-two thousand, four hundred ninety-one".