123401135 has 16 divisors (see below), whose sum is σ = 173970720. Its totient is φ = 82842240.

The previous prime is 123401101. The next prime is 123401149. The reversal of 123401135 is 531104321.

It is not a de Polignac number, because 123401135 - 2⁶ = 123401071 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85580 + ... + 87009.

It is an arithmetic number, because the mean of its divisors is an integer number (10873170).

Almost surely, 2^123401135 is an apocalyptic number.

123401135 is a deficient number, since it is larger than the sum of its proper divisors (50569585).

123401135 is a wasteful number, since it uses less digits than its factorization.

123401135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172618.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 123401135 is about 11108.6063482329. The cubic root of 123401135 is about 497.8590255417.

Adding to 123401135 its reverse (531104321), we get a palindrome (654505456).

The spelling of 123401135 in words is "one hundred twenty-three million, four hundred one thousand, one hundred thirty-five".