123011343142 has 32 divisors (see below), whose sum is σ = 199159833600. Its totient is φ = 56791886400.

The previous prime is 123011343113. The next prime is 123011343157. The reversal of 123011343142 is 241343110321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1580767 + ... + 1656757.

It is an arithmetic number, because the mean of its divisors is an integer number (6223744800).

Almost surely, 2^123011343142 is an apocalyptic number.

123011343142 is a deficient number, since it is larger than the sum of its proper divisors (76148490458).

123011343142 is a wasteful number, since it uses less digits than its factorization.

123011343142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77092.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 123011343142 its reverse (241343110321), we get a palindrome (364354453463).

The spelling of 123011343142 in words is "one hundred twenty-three billion, eleven million, three hundred forty-three thousand, one hundred forty-two".