123401140019 has 2 divisors, whose sum is σ = 123401140020. Its totient is φ = 123401140018.

The previous prime is 123401139977. The next prime is 123401140021. The reversal of 123401140019 is 910041104321.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123401140019 is a prime.

It is a super-2 number, since 2×123401140019² (a number of 23 digits) contains 22 as substring.

Together with 123401140021, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123401140019.

It is not a weakly prime, because it can be changed into another prime (123401140099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61700570009 + 61700570010.

It is an arithmetic number, because the mean of its divisors is an integer number (61700570010).

Almost surely, 2^123401140019 is an apocalyptic number.

123401140019 is a deficient number, since it is larger than the sum of its proper divisors (1).

123401140019 is an equidigital number, since it uses as much as digits as its factorization.

123401140019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 123401140019 in words is "one hundred twenty-three billion, four hundred one million, one hundred forty thousand, nineteen".