1439642 has 4 divisors (see below), whose sum is σ = 2159466. Its totient is φ = 719820.

The previous prime is 1439579. The next prime is 1439651. The reversal of 1439642 is 2469341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1413721 + 25921 = 1189^2 + 161^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359909 + ... + 359912.

2^1439642 is an apocalyptic number.

1439642 is a deficient number, since it is larger than the sum of its proper divisors (719824).

1439642 is an equidigital number, since it uses as much as digits as its factorization.

1439642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719823.

The product of its digits is 5184, while the sum is 29.

The square root of 1439642 is about 1199.8508240611. The cubic root of 1439642 is about 112.9149646096.

The spelling of 1439642 in words is "one million, four hundred thirty-nine thousand, six hundred forty-two".