123242430451403 has 2 divisors, whose sum is σ = 123242430451404. Its totient is φ = 123242430451402.

The previous prime is 123242430451397. The next prime is 123242430451417. The reversal of 123242430451403 is 304154034242321.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123242430451403 is a prime.

It is not a weakly prime, because it can be changed into another prime (123242430451453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61621215225701 + 61621215225702.

It is an arithmetic number, because the mean of its divisors is an integer number (61621215225702).

Almost surely, 2^{123242430451403} is an apocalyptic number.

123242430451403 is a deficient number, since it is larger than the sum of its proper divisors (1).

123242430451403 is an equidigital number, since it uses as much as digits as its factorization.

123242430451403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 276480, while the sum is 38.

Adding to 123242430451403 its reverse (304154034242321), we get a palindrome (427396464693724).

The spelling of 123242430451403 in words is "one hundred twenty-three trillion, two hundred forty-two billion, four hundred thirty million, four hundred fifty-one thousand, four hundred three".