123340425401 has 2 divisors, whose sum is σ = 123340425402. Its totient is φ = 123340425400.

The previous prime is 123340425349. The next prime is 123340425427. The reversal of 123340425401 is 104524043321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116792379001 + 6548046400 = 341749^2 + 80920^2 .

It is an emirp because it is prime and its reverse (104524043321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123340425401 is a prime.

It is not a weakly prime, because it can be changed into another prime (123340425101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61670212700 + 61670212701.

It is an arithmetic number, because the mean of its divisors is an integer number (61670212701).

Almost surely, 2^123340425401 is an apocalyptic number.

It is an amenable number.

123340425401 is a deficient number, since it is larger than the sum of its proper divisors (1).

123340425401 is an equidigital number, since it uses as much as digits as its factorization.

123340425401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 123340425401 its reverse (104524043321), we get a palindrome (227864468722).

The spelling of 123340425401 in words is "one hundred twenty-three billion, three hundred forty million, four hundred twenty-five thousand, four hundred one".