123144432340402 has 8 divisors (see below), whose sum is σ = 201509071102512. Its totient is φ = 55974741972900.

The previous prime is 123144432340343. The next prime is 123144432340469. The reversal of 123144432340402 is 204043234441321.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2798737098624 + ... + 2798737098667.

It is an arithmetic number, because the mean of its divisors is an integer number (25188633887814).

Almost surely, 2^{123144432340402} is an apocalyptic number.

123144432340402 is a deficient number, since it is larger than the sum of its proper divisors (78364638762110).

123144432340402 is a wasteful number, since it uses less digits than its factorization.

123144432340402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5597474197304.

The product of its (nonzero) digits is 221184, while the sum is 37.

Adding to 123144432340402 its reverse (204043234441321), we get a palindrome (327187666781723).

The spelling of 123144432340402 in words is "one hundred twenty-three trillion, one hundred forty-four billion, four hundred thirty-two million, three hundred forty thousand, four hundred two".