1090235 has 4 divisors (see below), whose sum is σ = 1308288. Its totient is φ = 872184.

The previous prime is 1090217. The next prime is 1090241. The reversal of 1090235 is 5320901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5320901 = 821 ⋅6481.

It is a cyclic number.

It is not a de Polignac number, because 1090235 - 2¹² = 1086139 is a prime.

It is a super-2 number, since 2×1090235² = 2377224710450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109019 + ... + 109028.

It is an arithmetic number, because the mean of its divisors is an integer number (327072).

2^1090235 is an apocalyptic number.

1090235 is a deficient number, since it is larger than the sum of its proper divisors (218053).

1090235 is an equidigital number, since it uses as much as digits as its factorization.

1090235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218052.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 1090235 is about 1044.1431894142. The cubic root of 1090235 is about 102.9216421037.

The spelling of 1090235 in words is "one million, ninety thousand, two hundred thirty-five".