1139642 has 24 divisors (see below), whose sum is σ = 2062260. Its totient is φ = 470400.

The previous prime is 1139623. The next prime is 1139669. The reversal of 1139642 is 2469311.

It can be written as a sum of positive squares in 2 ways, for example, as 1002001 + 137641 = 1001^2 + 371^2 .

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 2642 + ... + 3042.

2^1139642 is an apocalyptic number.

1139642 is a deficient number, since it is larger than the sum of its proper divisors (922618).

1139642 is a wasteful number, since it uses less digits than its factorization.

1139642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446 (or 439 counting only the distinct ones).

The product of its digits is 1296, while the sum is 26.

The square root of 1139642 is about 1067.5401631789. The cubic root of 1139642 is about 104.4534563758.

The spelling of 1139642 in words is "one million, one hundred thirty-nine thousand, six hundred forty-two".