1090422 has 40 divisors (see below), whose sum is σ = 2509056. Its totient is φ = 353808.

The previous prime is 1090421. The next prime is 1090423. The reversal of 1090422 is 2240901.

It is an interprime number because it is at equal distance from previous prime (1090421) and next prime (1090423).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1090395 and 1090404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1090421) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 8523 + ... + 8649.

2^1090422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1090422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1254528).

1090422 is an abundant number, since it is smaller than the sum of its proper divisors (1418634).

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

1090422 is a wasteful number, since it uses less digits than its factorization.

1090422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1090422 is about 1044.2327326798. The cubic root of 1090422 is about 102.9275262316.

The spelling of 1090422 in words is "one million, ninety thousand, four hundred twenty-two".