123393394 has 4 divisors (see below), whose sum is σ = 185090094. Its totient is φ = 61696696.

The previous prime is 123393379. The next prime is 123393397. The reversal of 123393394 is 493393321.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 73874025 + 49519369 = 8595^2 + 7037^2 .

It is not an unprimeable number, because it can be changed into a prime (123393397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30848347 + ... + 30848350.

Almost surely, 2^123393394 is an apocalyptic number.

123393394 is a deficient number, since it is larger than the sum of its proper divisors (61696700).

123393394 is an equidigital number, since it uses as much as digits as its factorization.

123393394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61696699.

The product of its digits is 52488, while the sum is 37.

The square root of 123393394 is about 11108.2579192239. The cubic root of 123393394 is about 497.8486150289.

The spelling of 123393394 in words is "one hundred twenty-three million, three hundred ninety-three thousand, three hundred ninety-four".