123949903 has 8 divisors (see below), whose sum is σ = 154535040. Its totient is φ = 96584280.

The previous prime is 123949877. The next prime is 123949909. The reversal of 123949903 is 309949321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123949903 - 2⁵ = 123949871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123949909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 804793 + ... + 804946.

It is an arithmetic number, because the mean of its divisors is an integer number (19316880).

Almost surely, 2^123949903 is an apocalyptic number.

123949903 is a deficient number, since it is larger than the sum of its proper divisors (30585137).

123949903 is a wasteful number, since it uses less digits than its factorization.

123949903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1609757.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 123949903 is about 11133.2790767141. The cubic root of 123949903 is about 498.5959315408.

The spelling of 123949903 in words is "one hundred twenty-three million, nine hundred forty-nine thousand, nine hundred three".