123740723 has 2 divisors, whose sum is σ = 123740724. Its totient is φ = 123740722.

The previous prime is 123740689. The next prime is 123740753. The reversal of 123740723 is 327047321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123740723 - 2²² = 119546419 is a prime.

It is not a weakly prime, because it can be changed into another prime (123740753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61870361 + 61870362.

It is an arithmetic number, because the mean of its divisors is an integer number (61870362).

Almost surely, 2^123740723 is an apocalyptic number.

123740723 is a deficient number, since it is larger than the sum of its proper divisors (1).

123740723 is an equidigital number, since it uses as much as digits as its factorization.

123740723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 123740723 is about 11123.8807526870. The cubic root of 123740723 is about 498.3152939062.

The spelling of 123740723 in words is "one hundred twenty-three million, seven hundred forty thousand, seven hundred twenty-three".