1129451 has 4 divisors (see below), whose sum is σ = 1131600. Its totient is φ = 1127304.

The previous prime is 1129441. The next prime is 1129459. The reversal of 1129451 is 1549211.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1129451 - 2¹⁰ = 1128427 is a prime.

It is a super-2 number, since 2×1129451² = 2551319122802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1129459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 305 + ... + 1533.

It is an arithmetic number, because the mean of its divisors is an integer number (282900).

2^1129451 is an apocalyptic number.

1129451 is a deficient number, since it is larger than the sum of its proper divisors (2149).

1129451 is an equidigital number, since it uses as much as digits as its factorization.

1129451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148.

The product of its digits is 360, while the sum is 23.

The square root of 1129451 is about 1062.7563220231. The cubic root of 1129451 is about 104.1411729256.

The spelling of 1129451 in words is "one million, one hundred twenty-nine thousand, four hundred fifty-one".