123949946 has 4 divisors (see below), whose sum is σ = 185924922. Its totient is φ = 61974972.

The previous prime is 123949937. The next prime is 123949961. The reversal of 123949946 is 649949321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 120670225 + 3279721 = 10985^2 + 1811^2 .

It is a super-2 number, since 2×123949946² = 30727178226805832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123949946.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30987485 + ... + 30987488.

Almost surely, 2^123949946 is an apocalyptic number.

123949946 is a deficient number, since it is larger than the sum of its proper divisors (61974976).

123949946 is an equidigital number, since it uses as much as digits as its factorization.

123949946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61974975.

The product of its digits is 419904, while the sum is 47.

The square root of 123949946 is about 11133.2810078611. The cubic root of 123949946 is about 498.5959891975.

The spelling of 123949946 in words is "one hundred twenty-three million, nine hundred forty-nine thousand, nine hundred forty-six".