123242430454397 has 2 divisors, whose sum is σ = 123242430454398. Its totient is φ = 123242430454396.

The previous prime is 123242430454393. The next prime is 123242430454411. The reversal of 123242430454397 is 793454034242321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123143830686361 + 98599768036 = 11097019^2 + 314006^2 .

It is a cyclic number.

It is not a de Polignac number, because 123242430454397 - 2² = 123242430454393 is a prime.

It is a super-2 number, since 2×123242430454397² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123242430454393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61621215227198 + 61621215227199.

It is an arithmetic number, because the mean of its divisors is an integer number (61621215227199).

Almost surely, 2^{123242430454397} is an apocalyptic number.

It is an amenable number.

123242430454397 is a deficient number, since it is larger than the sum of its proper divisors (1).

123242430454397 is an equidigital number, since it uses as much as digits as its factorization.

123242430454397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17418240, while the sum is 53.

The spelling of 123242430454397 in words is "one hundred twenty-three trillion, two hundred forty-two billion, four hundred thirty million, four hundred fifty-four thousand, three hundred ninety-seven".