634123 has 8 divisors (see below), whose sum is σ = 730592. Its totient is φ = 539136.

The previous prime is 634103. The next prime is 634141. The reversal of 634123 is 321436.

634123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 634123 - 2⁵ = 634091 is a prime.

It is a super-2 number, since 2×634123² = 804223958258, which contains 22 as substring.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 634123.

It is not an unprimeable number, because it can be changed into a prime (634103) 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, 811 + ... + 1387.

It is an arithmetic number, because the mean of its divisors is an integer number (91324).

2⁶³⁴¹²³ is an apocalyptic number.

634123 is a deficient number, since it is larger than the sum of its proper divisors (96469).

634123 is a wasteful number, since it uses less digits than its factorization.

634123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741.

The product of its digits is 432, while the sum is 19.

The square root of 634123 is about 796.3184036552. The cubic root of 634123 is about 85.9127924343.

Adding to 634123 its reverse (321436), we get a palindrome (955559).

It can be divided in two parts, 634 and 123, that added together give a palindrome (757).

The spelling of 634123 in words is "six hundred thirty-four thousand, one hundred twenty-three".