123490135 has 4 divisors (see below), whose sum is σ = 148188168. Its totient is φ = 98792104.

The previous prime is 123490123. The next prime is 123490141. The reversal of 123490135 is 531094321.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 123490135 - 2⁷ = 123490007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12349009 + ... + 12349018.

It is an arithmetic number, because the mean of its divisors is an integer number (37047042).

Almost surely, 2^123490135 is an apocalyptic number.

123490135 is a deficient number, since it is larger than the sum of its proper divisors (24698033).

123490135 is an equidigital number, since it uses as much as digits as its factorization.

123490135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24698032.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 123490135 is about 11112.6115292491. The cubic root of 123490135 is about 497.9786862595.

The spelling of 123490135 in words is "one hundred twenty-three million, four hundred ninety thousand, one hundred thirty-five".