1042729 has 8 divisors (see below), whose sum is σ = 1118880. Its totient is φ = 968256.

The previous prime is 1042709. The next prime is 1042733. The reversal of 1042729 is 9272401.

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 1042729 - 2¹⁷ = 911657 is a prime.

It is a Duffinian number.

1042729 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1042709) 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, 1042 + ... + 1780.

It is an arithmetic number, because the mean of its divisors is an integer number (139860).

2^1042729 is an apocalyptic number.

It is an amenable number.

1042729 is a deficient number, since it is larger than the sum of its proper divisors (76151).

1042729 is an equidigital number, since it uses as much as digits as its factorization.

1042729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1042729 is about 1021.1410284579. The cubic root of 1042729 is about 101.4044819564.

It can be divided in two parts, 1042 and 729, that added together give a palindrome (1771).

The spelling of 1042729 in words is "one million, forty-two thousand, seven hundred twenty-nine".