1229129 has 8 divisors (see below), whose sum is σ = 1411680. Its totient is φ = 1058400.

The previous prime is 1229113. The next prime is 1229131. The reversal of 1229129 is 9219221.

It is a happy number.

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 1229129 - 2⁴ = 1229113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1229098 and 1229107.

It is not an unprimeable number, because it can be changed into a prime (1229149) 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, 2732 + ... + 3149.

It is an arithmetic number, because the mean of its divisors is an integer number (176460).

2^1229129 is an apocalyptic number.

1229129 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1229129 is a deficient number, since it is larger than the sum of its proper divisors (182551).

1229129 is a wasteful number, since it uses less digits than its factorization.

1229129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5911.

The product of its digits is 648, while the sum is 26.

The square root of 1229129 is about 1108.6609039738. The cubic root of 1229129 is about 107.1188303373.

The spelling of 1229129 in words is "one million, two hundred twenty-nine thousand, one hundred twenty-nine".