123233443442 has 16 divisors (see below), whose sum is σ = 190251519552. Its totient is φ = 59842176240.

The previous prime is 123233443409. The next prime is 123233443451. The reversal of 123233443442 is 244344332321.

It is a super-2 number, since 2×123233443442² (a number of 23 digits) contains 22 as substring.

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, 6466913 + ... + 6485940.

It is an arithmetic number, because the mean of its divisors is an integer number (11890719972).

Almost surely, 2^123233443442 is an apocalyptic number.

123233443442 is a deficient number, since it is larger than the sum of its proper divisors (67018076110).

123233443442 is a wasteful number, since it uses less digits than its factorization.

123233443442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12952993.

The product of its digits is 165888, while the sum is 35.

Adding to 123233443442 its reverse (244344332321), we get a palindrome (367577775763).

The spelling of 123233443442 in words is "one hundred twenty-three billion, two hundred thirty-three million, four hundred forty-three thousand, four hundred forty-two".