123402143044 has 12 divisors (see below), whose sum is σ = 215959538704. Its totient is φ = 61699417704.

The previous prime is 123402143009. The next prime is 123402143069. The reversal of 123402143044 is 440341204321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 237222 + ... + 550525.

Almost surely, 2^123402143044 is an apocalyptic number.

It is an amenable number.

123402143044 is a deficient number, since it is larger than the sum of its proper divisors (92557395660).

123402143044 is a wasteful number, since it uses less digits than its factorization.

123402143044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826914 (or 826912 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 123402143044 its reverse (440341204321), we get a palindrome (563743347365).

The spelling of 123402143044 in words is "one hundred twenty-three billion, four hundred two million, one hundred forty-three thousand, forty-four".