1042890 has 16 divisors (see below), whose sum is σ = 2503008. Its totient is φ = 278096.

The previous prime is 1042861. The next prime is 1042897. The reversal of 1042890 is 982401.

It is a self number, because there is not a number n which added to its sum of digits gives 1042890.

It is not an unprimeable number, because it can be changed into a prime (1042897) 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, 17352 + ... + 17411.

It is an arithmetic number, because the mean of its divisors is an integer number (156438).

2^1042890 is an apocalyptic number.

1042890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1042890 is an abundant number, since it is smaller than the sum of its proper divisors (1460118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1042890 is a wasteful number, since it uses less digits than its factorization.

1042890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34773.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1042890 is about 1021.2198587963. The cubic root of 1042890 is about 101.4097007241.

The spelling of 1042890 in words is "one million, forty-two thousand, eight hundred ninety".