1002090 has 16 divisors (see below), whose sum is σ = 2405088. Its totient is φ = 267216.

The previous prime is 1002083. The next prime is 1002091. The reversal of 1002090 is 902001.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1002091) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 16672 + ... + 16731.

It is an arithmetic number, because the mean of its divisors is an integer number (150318).

2^1002090 is an apocalyptic number.

1002090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1002090 is an abundant number, since it is smaller than the sum of its proper divisors (1402998).

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

1002090 is a wasteful number, since it uses less digits than its factorization.

1002090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33413.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 1002090 is about 1001.0444545573. The cubic root of 1002090 is about 100.0696181885.

Adding to 1002090 its reverse (902001), we get a palindrome (1904091).

The spelling of 1002090 in words is "one million, two thousand, ninety".