1042387 has 4 divisors (see below), whose sum is σ = 1044576. Its totient is φ = 1040200.

The previous prime is 1042381. The next prime is 1042399. The reversal of 1042387 is 7832401.

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 1042387 - 2⁷ = 1042259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43 + ... + 1444.

It is an arithmetic number, because the mean of its divisors is an integer number (261144).

2^1042387 is an apocalyptic number.

1042387 is a deficient number, since it is larger than the sum of its proper divisors (2189).

1042387 is an equidigital number, since it uses as much as digits as its factorization.

1042387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188.

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1042387 is about 1020.9735549954. The cubic root of 1042387 is about 101.3933943440.

Adding to 1042387 its reverse (7832401), we get a palindrome (8874788).

The spelling of 1042387 in words is "one million, forty-two thousand, three hundred eighty-seven".