1090045 has 8 divisors (see below), whose sum is σ = 1427040. Its totient is φ = 792720.

The previous prime is 1090031. The next prime is 1090097. The reversal of 1090045 is 5400901.

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

It is not a de Polignac number, because 1090045 - 2⁵ = 1090013 is a prime.

It is a congruent number.

It is an unprimeable number.

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, 9855 + ... + 9964.

It is an arithmetic number, because the mean of its divisors is an integer number (178380).

2^1090045 is an apocalyptic number.

It is an amenable number.

1090045 is a deficient number, since it is larger than the sum of its proper divisors (336995).

1090045 is a wasteful number, since it uses less digits than its factorization.

1090045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19835.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1090045 is about 1044.0522017600. The cubic root of 1090045 is about 102.9156628888.

Subtracting from 1090045 its sum of digits (19), we obtain a triangular number (1090026 = T₁₄₇₆).

Adding to 1090045 its reverse (5400901), we get a palindrome (6490946).

The spelling of 1090045 in words is "one million, ninety thousand, forty-five".