612123 has 8 divisors (see below), whose sum is σ = 859200. Its totient is φ = 386568.

The previous prime is 612113. The next prime is 612133. The reversal of 612123 is 321216.

It is an interprime number because it is at equal distance from previous prime (612113) and next prime (612133).

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

It is not a de Polignac number, because 612123 - 2⁴ = 612107 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (612113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5313 + ... + 5426.

It is an arithmetic number, because the mean of its divisors is an integer number (107400).

2⁶¹²¹²³ is an apocalyptic number.

612123 is a deficient number, since it is larger than the sum of its proper divisors (247077).

612123 is a wasteful number, since it uses less digits than its factorization.

612123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10761.

The product of its digits is 72, while the sum is 15.

The square root of 612123 is about 782.3828985861. The cubic root of 612123 is about 84.9075349756.

Adding to 612123 its reverse (321216), we get a palindrome (933339).

The spelling of 612123 in words is "six hundred twelve thousand, one hundred twenty-three".