123355135 has 16 divisors (see below), whose sum is σ = 151188480. Its totient is φ = 96590880.

The previous prime is 123355129. The next prime is 123355139. The reversal of 123355135 is 531553321.

It is not a de Polignac number, because 123355135 - 2¹³ = 123346943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123355139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79174 + ... + 80716.

It is an arithmetic number, because the mean of its divisors is an integer number (9449280).

Almost surely, 2^123355135 is an apocalyptic number.

123355135 is a deficient number, since it is larger than the sum of its proper divisors (27833345).

123355135 is a wasteful number, since it uses less digits than its factorization.

123355135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1878.

The product of its digits is 6750, while the sum is 28.

The square root of 123355135 is about 11106.5356885034. The cubic root of 123355135 is about 497.7971558747.

The spelling of 123355135 in words is "one hundred twenty-three million, three hundred fifty-five thousand, one hundred thirty-five".