123662573 has 4 divisors (see below), whose sum is σ = 130936860. Its totient is φ = 116388288.

The previous prime is 123662569. The next prime is 123662579. The reversal of 123662573 is 375266321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 81956809 + 41705764 = 9053^2 + 6458^2 .

It is a cyclic number.

It is not a de Polignac number, because 123662573 - 2² = 123662569 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123662579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3637118 + ... + 3637151.

It is an arithmetic number, because the mean of its divisors is an integer number (32734215).

Almost surely, 2^123662573 is an apocalyptic number.

It is an amenable number.

123662573 is a deficient number, since it is larger than the sum of its proper divisors (7274287).

123662573 is an equidigital number, since it uses as much as digits as its factorization.

123662573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7274286.

The product of its digits is 45360, while the sum is 35.

The square root of 123662573 is about 11120.3674849350. The cubic root of 123662573 is about 498.2103660632.

The spelling of 123662573 in words is "one hundred twenty-three million, six hundred sixty-two thousand, five hundred seventy-three".