1090442 has 8 divisors (see below), whose sum is σ = 1640100. Its totient is φ = 543744.

The previous prime is 1090423. The next prime is 1090457. The reversal of 1090442 is 2440901.

1090442 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in 2 ways, for example, as 1018081 + 72361 = 1009^2 + 269^2 .

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

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, 1034 + ... + 1802.

2^1090442 is an apocalyptic number.

1090442 is a deficient number, since it is larger than the sum of its proper divisors (549658).

1090442 is an equidigital number, since it uses as much as digits as its factorization.

1090442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1480.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1090442 is about 1044.2423090452. The cubic root of 1090442 is about 102.9281555103.

The spelling of 1090442 in words is "one million, ninety thousand, four hundred forty-two".