123111424442 has 16 divisors (see below), whose sum is σ = 187033214592. Its totient is φ = 60768140160.

The previous prime is 123111424441. The next prime is 123111424477. The reversal of 123111424442 is 244424111321.

It is a super-2 number, since 2×123111424442² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (123111424441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59159 + ... + 499722.

It is an arithmetic number, because the mean of its divisors is an integer number (11689575912).

Almost surely, 2^123111424442 is an apocalyptic number.

123111424442 is a deficient number, since it is larger than the sum of its proper divisors (63921790150).

123111424442 is a wasteful number, since it uses less digits than its factorization.

123111424442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560293.

The product of its digits is 6144, while the sum is 29.

Adding to 123111424442 its reverse (244424111321), we get a palindrome (367535535763).

The spelling of 123111424442 in words is "one hundred twenty-three billion, one hundred eleven million, four hundred twenty-four thousand, four hundred forty-two".