1089942 has 16 divisors (see below), whose sum is σ = 2491392.
Its totient is φ = 311400.
The previous prime is 1089941. The next prime is 1089943. The reversal of 1089942 is 2499801.
It is an interprime number because it is at equal distance from previous prime (1089941) and next prime (1089943).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (1089941) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12934 + ... + 13017.
It is an arithmetic number, because the mean of its divisors is an integer number (155712).
21089942 is an apocalyptic number.
1089942 is an abundant number, since it is smaller than the sum of its proper divisors (1401450).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
1089942 is a wasteful number, since it uses less digits than its factorization.
1089942 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 25963.
The product of its (nonzero) digits is 5184, while the sum is 33.
The square root of 1089942 is about 1044.0028735593.
The cubic root of 1089942 is about 102.9124212345.
The spelling of 1089942 in words is "one million, eighty-nine thousand, nine hundred forty-two".