123111240330442 has 48 divisors (see below), whose sum is σ = 233005225531680. Its totient is φ = 48352963956192.

The previous prime is 123111240330361. The next prime is 123111240330451. The reversal of 123111240330442 is 244033042111321.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 347425888 + ... + 347780059.

It is an arithmetic number, because the mean of its divisors is an integer number (4854275531910).

Almost surely, 2^{123111240330442} is an apocalyptic number.

123111240330442 is a deficient number, since it is larger than the sum of its proper divisors (109893985201238).

123111240330442 is a wasteful number, since it uses less digits than its factorization.

123111240330442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695206115 (or 695206108 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 123111240330442 its reverse (244033042111321), we get a palindrome (367144282441763).

The spelling of 123111240330442 in words is "one hundred twenty-three trillion, one hundred eleven billion, two hundred forty million, three hundred thirty thousand, four hundred forty-two".