123634 has 8 divisors (see below), whose sum is σ = 211968. Its totient is φ = 52980.

The previous prime is 123631. The next prime is 123637. The reversal of 123634 is 436321.

It is an interprime number because it is at equal distance from previous prime (123631) and next prime (123637).

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

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

It is not an unprimeable number, because it can be changed into a prime (123631) 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, 4402 + ... + 4429.

It is an arithmetic number, because the mean of its divisors is an integer number (26496).

2¹²³⁶³⁴ is an apocalyptic number.

123634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

123634 is a deficient number, since it is larger than the sum of its proper divisors (88334).

123634 is an equidigital number, since it uses as much as digits as its factorization.

123634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8840.

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

The square root of 123634 is about 351.6162681106. The cubic root of 123634 is about 49.8171991582.

Adding to 123634 its reverse (436321), we get a palindrome (559955).

It can be divided in two parts, 1236 and 34, that multiplied together give a palindrome (42024).

The spelling of 123634 in words is "one hundred twenty-three thousand, six hundred thirty-four".