123749942 has 8 divisors (see below), whose sum is σ = 185711232. Its totient is φ = 61846200.

The previous prime is 123749921. The next prime is 123749993. The reversal of 123749942 is 249947321.

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

It is a self number, because there is not a number n which added to its sum of digits gives 123749942.

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, 8534 + ... + 17897.

It is an arithmetic number, because the mean of its divisors is an integer number (23213904).

Almost surely, 2^123749942 is an apocalyptic number.

123749942 is a deficient number, since it is larger than the sum of its proper divisors (61961290).

123749942 is a wasteful number, since it uses less digits than its factorization.

123749942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28774.

The product of its digits is 108864, while the sum is 41.

The square root of 123749942 is about 11124.2951237371. The cubic root of 123749942 is about 498.3276688531.

The spelling of 123749942 in words is "one hundred twenty-three million, seven hundred forty-nine thousand, nine hundred forty-two".