1042491 has 8 divisors (see below), whose sum is σ = 1471824. Its totient is φ = 654080.

The previous prime is 1042487. The next prime is 1042519. The reversal of 1042491 is 1942401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1042491 - 2² = 1042487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1042451) 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 7 ways as a sum of consecutive naturals, for example, 10170 + ... + 10271.

It is an arithmetic number, because the mean of its divisors is an integer number (183978).

2^1042491 is an apocalyptic number.

1042491 is a deficient number, since it is larger than the sum of its proper divisors (429333).

1042491 is a wasteful number, since it uses less digits than its factorization.

1042491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20461.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1042491 is about 1021.0244855046. The cubic root of 1042491 is about 101.3967662722.

Adding to 1042491 its reverse (1942401), we get a palindrome (2984892).

The spelling of 1042491 in words is "one million, forty-two thousand, four hundred ninety-one".