135042623 has 2 divisors, whose sum is σ = 135042624. Its totient is φ = 135042622.

The previous prime is 135042601. The next prime is 135042629. The reversal of 135042623 is 326240531.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135042623 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135042592 and 135042601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135042629) 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, 67521311 + 67521312.

It is an arithmetic number, because the mean of its divisors is an integer number (67521312).

Almost surely, 2^135042623 is an apocalyptic number.

135042623 is a deficient number, since it is larger than the sum of its proper divisors (1).

135042623 is an equidigital number, since it uses as much as digits as its factorization.

135042623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 135042623 is about 11620.7840957484. The cubic root of 135042623 is about 513.0467666961.

The spelling of 135042623 in words is "one hundred thirty-five million, forty-two thousand, six hundred twenty-three".