123990353 has 4 divisors (see below), whose sum is σ = 125736768. Its totient is φ = 122243940.

The previous prime is 123990331. The next prime is 123990379. The reversal of 123990353 is 353099321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 353099321 = 73 ⋅4836977.

It is a cyclic number.

It is not a de Polignac number, because 123990353 - 2⁶ = 123990289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123990313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 873101 + ... + 873242.

It is an arithmetic number, because the mean of its divisors is an integer number (31434192).

Almost surely, 2^123990353 is an apocalyptic number.

It is an amenable number.

123990353 is a deficient number, since it is larger than the sum of its proper divisors (1746415).

123990353 is an equidigital number, since it uses as much as digits as its factorization.

123990353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746414.

The product of its (nonzero) digits is 21870, while the sum is 35.

The square root of 123990353 is about 11135.0955541477. The cubic root of 123990353 is about 498.6501631603.

The spelling of 123990353 in words is "one hundred twenty-three million, nine hundred ninety thousand, three hundred fifty-three".