123903072 has 72 divisors (see below), whose sum is σ = 373090536. Its totient is φ = 38870016.

The previous prime is 123903067. The next prime is 123903077. The reversal of 123903072 is 270309321.

It is an interprime number because it is at equal distance from previous prime (123903067) and next prime (123903077).

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123903077) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7758 + ... + 17549.

It is an arithmetic number, because the mean of its divisors is an integer number (5181813).

Almost surely, 2^123903072 is an apocalyptic number.

123903072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

123903072 is an abundant number, since it is smaller than the sum of its proper divisors (249187464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123903072 is a wasteful number, since it uses less digits than its factorization.

123903072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25340 (or 25329 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 123903072 is about 11131.1756791455. The cubic root of 123903072 is about 498.5331301273.

The spelling of 123903072 in words is "one hundred twenty-three million, nine hundred three thousand, seventy-two".