123949942 has 8 divisors (see below), whose sum is σ = 186723576. Its totient is φ = 61708752.

The previous prime is 123949937. The next prime is 123949961. The reversal of 123949942 is 249949321.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132528 + ... + 133459.

It is an arithmetic number, because the mean of its divisors is an integer number (23340447).

Almost surely, 2^123949942 is an apocalyptic number.

123949942 is a deficient number, since it is larger than the sum of its proper divisors (62773634).

123949942 is a wasteful number, since it uses less digits than its factorization.

123949942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266222.

The product of its digits is 139968, while the sum is 43.

The square root of 123949942 is about 11133.2808282195. The cubic root of 123949942 is about 498.5959838341.

The spelling of 123949942 in words is "one hundred twenty-three million, nine hundred forty-nine thousand, nine hundred forty-two".