1090042 has 8 divisors (see below), whose sum is σ = 1656000. Its totient is φ = 538044.

The previous prime is 1090031. The next prime is 1090097. The reversal of 1090042 is 2400901.

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

It is a junction number, because it is equal to n+sod(n) for n = 1089998 and 1090025.

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, 3292 + ... + 3607.

It is an arithmetic number, because the mean of its divisors is an integer number (207000).

2^1090042 is an apocalyptic number.

1090042 is a deficient number, since it is larger than the sum of its proper divisors (565958).

1090042 is an equidigital number, since it uses as much as digits as its factorization.

1090042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6980.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1090042 is about 1044.0507650493. The cubic root of 1090042 is about 102.9155684745.

Subtracting from 1090042 its sum of digits (16), we obtain a triangular number (1090026 = T₁₄₇₆).

Adding to 1090042 its reverse (2400901), we get a palindrome (3490943).

The spelling of 1090042 in words is "one million, ninety thousand, forty-two".