1230129 has 12 divisors (see below), whose sum is σ = 1795456. Its totient is φ = 811512.

The previous prime is 1230127. The next prime is 1230167. The reversal of 1230129 is 9210321.

It is a happy number.

It is not a de Polignac number, because 1230129 - 2¹ = 1230127 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1230127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 264 + ... + 1590.

2^1230129 is an apocalyptic number.

It is an amenable number.

1230129 is a deficient number, since it is larger than the sum of its proper divisors (565327).

1230129 is a wasteful number, since it uses less digits than its factorization.

1230129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436 (or 1433 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 1230129 is about 1109.1118068076. Note that the first 3 decimals coincide. The cubic root of 1230129 is about 107.1478725271.

The spelling of 1230129 in words is "one million, two hundred thirty thousand, one hundred twenty-nine".