123331442 has 16 divisors (see below), whose sum is σ = 199597272. Its totient is φ = 56816640.

The previous prime is 123331433. The next prime is 123331463. The reversal of 123331442 is 244133321.

It can be written as a sum of positive squares in 4 ways, for example, as 123187801 + 143641 = 11099^2 + 379^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10892 + ... + 19112.

Almost surely, 2^123331442 is an apocalyptic number.

123331442 is a deficient number, since it is larger than the sum of its proper divisors (76265830).

123331442 is a wasteful number, since it uses less digits than its factorization.

123331442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8813.

The product of its digits is 1728, while the sum is 23.

The square root of 123331442 is about 11105.4690130584. The cubic root of 123331442 is about 497.7652829596.

Adding to 123331442 its reverse (244133321), we get a palindrome (367464763).

The spelling of 123331442 in words is "one hundred twenty-three million, three hundred thirty-one thousand, four hundred forty-two".