1040239 has 6 divisors (see below), whose sum is σ = 1059896. Its totient is φ = 1020900.

The previous prime is 1040227. The next prime is 1040311. The reversal of 1040239 is 9320401.

1040239 = T₁₁₅ + T₁₁₆ + ... + T₁₉₇.

It is not a de Polignac number, because 1040239 - 2¹³ = 1032047 is a prime.

It is a Duffinian number.

1040239 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6814 + ... + 6964.

2^1040239 is an apocalyptic number.

1040239 is a deficient number, since it is larger than the sum of its proper divisors (19657).

1040239 is an frugal number, since it uses more digits than its factorization.

1040239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 1040239 is about 1019.9210753779. The cubic root of 1040239 is about 101.3237008484.

The spelling of 1040239 in words is "one million, forty thousand, two hundred thirty-nine".