1001129 has 4 divisors (see below), whose sum is σ = 1053840. Its totient is φ = 948420.

The previous prime is 1001123. The next prime is 1001153. The reversal of 1001129 is 9211001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9211001 = 1277 ⋅7213.

It is a cyclic number.

It is not a de Polignac number, because 1001129 - 2¹⁶ = 935593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26327 + ... + 26364.

It is an arithmetic number, because the mean of its divisors is an integer number (263460).

2^1001129 is an apocalyptic number.

1001129 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1001129 is a deficient number, since it is larger than the sum of its proper divisors (52711).

1001129 is an equidigital number, since it uses as much as digits as its factorization.

1001129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52710.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 1001129 is about 1000.5643407598. The cubic root of 1001129 is about 100.0376191795.

The spelling of 1001129 in words is "one million, one thousand, one hundred twenty-nine".