1129457 has 8 divisors (see below), whose sum is σ = 1318656. Its totient is φ = 947232.

The previous prime is 1129441. The next prime is 1129459. The reversal of 1129457 is 7549211.

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 1129457 - 2⁴ = 1129441 is a prime.

It is a super-2 number, since 2×1129457² = 2551346229698, 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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1388 + ... + 2045.

It is an arithmetic number, because the mean of its divisors is an integer number (164832).

2^1129457 is an apocalyptic number.

It is an amenable number.

1129457 is a deficient number, since it is larger than the sum of its proper divisors (189199).

1129457 is an equidigital number, since it uses as much as digits as its factorization.

1129457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3487.

The product of its digits is 2520, while the sum is 29.

The square root of 1129457 is about 1062.7591448677. The cubic root of 1129457 is about 104.1413573355.

The spelling of 1129457 in words is "one million, one hundred twenty-nine thousand, four hundred fifty-seven".