135421667 has 2 divisors, whose sum is σ = 135421668. Its totient is φ = 135421666.

The previous prime is 135421597. The next prime is 135421679. The reversal of 135421667 is 766124531.

It is a strong prime.

It is an emirp because it is prime and its reverse (766124531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135421667 - 2⁸ = 135421411 is a prime.

It is not a weakly prime, because it can be changed into another prime (135421687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67710833 + 67710834.

It is an arithmetic number, because the mean of its divisors is an integer number (67710834).

Almost surely, 2^135421667 is an apocalyptic number.

135421667 is a deficient number, since it is larger than the sum of its proper divisors (1).

135421667 is an equidigital number, since it uses as much as digits as its factorization.

135421667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 35.

The square root of 135421667 is about 11637.0815499420. The cubic root of 135421667 is about 513.5263329023.

The spelling of 135421667 in words is "one hundred thirty-five million, four hundred twenty-one thousand, six hundred sixty-seven".