156493123 has 2 divisors, whose sum is σ = 156493124. Its totient is φ = 156493122.

The previous prime is 156493079. The next prime is 156493133. The reversal of 156493123 is 321394651.

156493123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (321394651) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156493123 is a prime.

It is not a weakly prime, because it can be changed into another prime (156493133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78246561 + 78246562.

It is an arithmetic number, because the mean of its divisors is an integer number (78246562).

Almost surely, 2^156493123 is an apocalyptic number.

156493123 is a deficient number, since it is larger than the sum of its proper divisors (1).

156493123 is an equidigital number, since it uses as much as digits as its factorization.

156493123 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19440, while the sum is 34.

The square root of 156493123 is about 12509.7211399775. The cubic root of 156493123 is about 538.8878838083.

The spelling of 156493123 in words is "one hundred fifty-six million, four hundred ninety-three thousand, one hundred twenty-three".