123670 has 16 divisors (see below), whose sum is σ = 226800. Its totient is φ = 48544.

The previous prime is 123667. The next prime is 123677. The reversal of 123670 is 76321.

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

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123677) 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, 756 + ... + 904.

It is an arithmetic number, because the mean of its divisors is an integer number (14175).

2¹²³⁶⁷⁰ is an apocalyptic number.

123670 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

123670 is a deficient number, since it is larger than the sum of its proper divisors (103130).

123670 is a wasteful number, since it uses less digits than its factorization.

123670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 123670 is about 351.6674565552. The cubic root of 123670 is about 49.8220339801.

Adding to 123670 its reverse (76321), we get a palindrome (199991).

The spelling of 123670 in words is "one hundred twenty-three thousand, six hundred seventy".