1042739 has 4 divisors (see below), whose sum is σ = 1097640. Its totient is φ = 987840.

The previous prime is 1042733. The next prime is 1042759. The reversal of 1042739 is 9372401.

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 1042739 - 2¹² = 1038643 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (1042733) 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, 27422 + ... + 27459.

It is an arithmetic number, because the mean of its divisors is an integer number (274410).

2^1042739 is an apocalyptic number.

1042739 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1042739 is a deficient number, since it is larger than the sum of its proper divisors (54901).

1042739 is an equidigital number, since it uses as much as digits as its factorization.

1042739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54900.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 1042739 is about 1021.1459249294. The cubic root of 1042739 is about 101.4048061191.

The spelling of 1042739 in words is "one million, forty-two thousand, seven hundred thirty-nine".