123126356 has 12 divisors (see below), whose sum is σ = 215974080. Its totient is φ = 61419480.

The previous prime is 123126317. The next prime is 123126397. The reversal of 123126356 is 653621321.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 33986 + ... + 37433.

It is an arithmetic number, because the mean of its divisors is an integer number (17997840).

Almost surely, 2^123126356 is an apocalyptic number.

It is an amenable number.

123126356 is a deficient number, since it is larger than the sum of its proper divisors (92847724).

123126356 is a wasteful number, since it uses less digits than its factorization.

123126356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71854 (or 71852 counting only the distinct ones).

The product of its digits is 6480, while the sum is 29.

The square root of 123126356 is about 11096.2316125791. The cubic root of 123126356 is about 497.4892210824.

Adding to 123126356 its reverse (653621321), we get a palindrome (776747677).

The spelling of 123126356 in words is "one hundred twenty-three million, one hundred twenty-six thousand, three hundred fifty-six".