123951 has 8 divisors (see below), whose sum is σ = 167680. Its totient is φ = 81432.

The previous prime is 123941. The next prime is 123953. The reversal of 123951 is 159321.

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

It is not a de Polignac number, because 123951 - 2⁶ = 123887 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123953) 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, 25 + ... + 498.

It is an arithmetic number, because the mean of its divisors is an integer number (20960).

2¹²³⁹⁵¹ is an apocalyptic number.

123951 is a deficient number, since it is larger than the sum of its proper divisors (43729).

123951 is an equidigital number, since it uses as much as digits as its factorization.

123951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605.

The product of its digits is 270, while the sum is 21.

The square root of 123951 is about 352.0667550338. The cubic root of 123951 is about 49.8597402453.

The spelling of 123951 in words is "one hundred twenty-three thousand, nine hundred fifty-one".