672129 has 24 divisors (see below), whose sum is σ = 1078272. Its totient is φ = 401280.

The previous prime is 672127. The next prime is 672131. The reversal of 672129 is 921276.

It is an interprime number because it is at equal distance from previous prime (672127) and next prime (672131).

It is not a de Polignac number, because 672129 - 2¹ = 672127 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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 (672127) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3424 + ... + 3614.

It is an arithmetic number, because the mean of its divisors is an integer number (44928).

2⁶⁷²¹²⁹ is an apocalyptic number.

672129 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

It is an amenable number.

672129 is a deficient number, since it is larger than the sum of its proper divisors (406143).

672129 is a wasteful number, since it uses less digits than its factorization.

672129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237 (or 234 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 672129 is about 819.8347394445. The cubic root of 672129 is about 87.5959871809.

The spelling of 672129 in words is "six hundred seventy-two thousand, one hundred twenty-nine".