1009422 has 48 divisors (see below), whose sum is σ = 2376192. Its totient is φ = 320760.

The previous prime is 1009417. The next prime is 1009433. The reversal of 1009422 is 2249001.

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 = 1009395 and 1009404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15033 + ... + 15099.

It is an arithmetic number, because the mean of its divisors is an integer number (49504).

2^1009422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1009422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1188096).

1009422 is an abundant number, since it is smaller than the sum of its proper divisors (1366770).

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

1009422 is an equidigital number, since it uses as much as digits as its factorization.

1009422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 103 counting only the distinct ones).

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

The square root of 1009422 is about 1004.6999552105. The cubic root of 1009422 is about 100.3130854189.

It can be divided in two parts, 1009 and 422, that added together give a triangular number (1431 = T₅₃).

The spelling of 1009422 in words is "one million, nine thousand, four hundred twenty-two".