123242234651 has 4 divisors (see below), whose sum is σ = 123980212272. Its totient is φ = 122504257032.

The previous prime is 123242234639. The next prime is 123242234663. The reversal of 123242234651 is 156432242321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (123242234639) and next prime (123242234663).

It is a cyclic number.

It is not a de Polignac number, because 123242234651 - 2¹⁸ = 123241972507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123242234611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368988560 + ... + 368988893.

It is an arithmetic number, because the mean of its divisors is an integer number (30995053068).

Almost surely, 2^123242234651 is an apocalyptic number.

123242234651 is a deficient number, since it is larger than the sum of its proper divisors (737977621).

123242234651 is an equidigital number, since it uses as much as digits as its factorization.

123242234651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737977620.

The product of its digits is 69120, while the sum is 35.

Adding to 123242234651 its reverse (156432242321), we get a palindrome (279674476972).

The spelling of 123242234651 in words is "one hundred twenty-three billion, two hundred forty-two million, two hundred thirty-four thousand, six hundred fifty-one".