1122992 has 20 divisors (see below), whose sum is σ = 2343600. Its totient is φ = 518208.

The previous prime is 1122983. The next prime is 1122997. The reversal of 1122992 is 2992211.

It is a happy number.

It is a super-2 number, since 2×1122992² = 2522222064128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (1122997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2492 + ... + 2907.

It is an arithmetic number, because the mean of its divisors is an integer number (117180).

2^1122992 is an apocalyptic number.

It is an amenable number.

1122992 is an abundant number, since it is smaller than the sum of its proper divisors (1220608).

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

1122992 is a wasteful number, since it uses less digits than its factorization.

1122992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5420 (or 5414 counting only the distinct ones).

The product of its digits is 648, while the sum is 26.

The square root of 1122992 is about 1059.7131687395. The cubic root of 1122992 is about 103.9422756588.

The spelling of 1122992 in words is "one million, one hundred twenty-two thousand, nine hundred ninety-two".