123790 has 8 divisors (see below), whose sum is σ = 222840. Its totient is φ = 49512.

The previous prime is 123787. The next prime is 123791. The reversal of 123790 is 97321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123791) 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, 6180 + ... + 6199.

It is an arithmetic number, because the mean of its divisors is an integer number (27855).

2¹²³⁷⁹⁰ is an apocalyptic number.

123790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123790 is a deficient number, since it is larger than the sum of its proper divisors (99050).

123790 is a wasteful number, since it uses less digits than its factorization.

123790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12386.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 123790 is about 351.8380309176. The cubic root of 123790 is about 49.8381432801.

The spelling of 123790 in words is "one hundred twenty-three thousand, seven hundred ninety".