123137389 has 8 divisors (see below), whose sum is σ = 125116992. Its totient is φ = 121169760.

The previous prime is 123137323. The next prime is 123137401. The reversal of 123137389 is 983731321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123137389 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 (123131389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19009 + ... + 24649.

It is an arithmetic number, because the mean of its divisors is an integer number (15639624).

Almost surely, 2^123137389 is an apocalyptic number.

It is an amenable number.

123137389 is a deficient number, since it is larger than the sum of its proper divisors (1979603).

123137389 is an equidigital number, since it uses as much as digits as its factorization.

123137389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5987.

The product of its digits is 27216, while the sum is 37.

The square root of 123137389 is about 11096.7287522044. The cubic root of 123137389 is about 497.5040801665.

The spelling of 123137389 in words is "one hundred twenty-three million, one hundred thirty-seven thousand, three hundred eighty-nine".