123312442 has 8 divisors (see below), whose sum is σ = 201784032. Its totient is φ = 56051100.

The previous prime is 123312421. The next prime is 123312473. The reversal of 123312442 is 244213321.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 5605111 = 123312442 / (1 + 2 + 3 + 3 + 1 + 2 + 4 + 4 + 2).

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, 2802534 + ... + 2802577.

It is an arithmetic number, because the mean of its divisors is an integer number (25223004).

Almost surely, 2^123312442 is an apocalyptic number.

123312442 is a deficient number, since it is larger than the sum of its proper divisors (78471590).

123312442 is a wasteful number, since it uses less digits than its factorization.

123312442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5605124.

The product of its digits is 1152, while the sum is 22.

The square root of 123312442 is about 11104.6135457295. The cubic root of 123312442 is about 497.7397203350.

Adding to 123312442 its reverse (244213321), we get a palindrome (367525763).

The spelling of 123312442 in words is "one hundred twenty-three million, three hundred twelve thousand, four hundred forty-two".