123042131651 has 8 divisors (see below), whose sum is σ = 127036800000. Its totient is φ = 119049061320.

The previous prime is 123042131647. The next prime is 123042131657. The reversal of 123042131651 is 156131240321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123042131651 - 2² = 123042131647 is a prime.

It is a super-2 number, since 2×123042131651² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123042131657) 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, 242021 + ... + 551958.

It is an arithmetic number, because the mean of its divisors is an integer number (15879600000).

Almost surely, 2^123042131651 is an apocalyptic number.

123042131651 is a deficient number, since it is larger than the sum of its proper divisors (3994668349).

123042131651 is an equidigital number, since it uses as much as digits as its factorization.

123042131651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799009.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 123042131651 its reverse (156131240321), we get a palindrome (279173371972).

The spelling of 123042131651 in words is "one hundred twenty-three billion, forty-two million, one hundred thirty-one thousand, six hundred fifty-one".