123403012 has 48 divisors (see below), whose sum is σ = 228388608. Its totient is φ = 58291200.

The previous prime is 123402973. The next prime is 123403031. The reversal of 123403012 is 210304321.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1221762 + ... + 1221862.

It is an arithmetic number, because the mean of its divisors is an integer number (4758096).

Almost surely, 2^123403012 is an apocalyptic number.

It is an amenable number.

123403012 is a deficient number, since it is larger than the sum of its proper divisors (104985596).

123403012 is a wasteful number, since it uses less digits than its factorization.

123403012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 123403012 is about 11108.6908319568. The cubic root of 123403012 is about 497.8615497666.

Adding to 123403012 its reverse (210304321), we get a palindrome (333707333).

The spelling of 123403012 in words is "one hundred twenty-three million, four hundred three thousand, twelve".