1122945 has 16 divisors (see below), whose sum is σ = 1839552. Its totient is φ = 584640.

The previous prime is 1122941. The next prime is 1122983. The reversal of 1122945 is 5492211.

It is not a de Polignac number, because 1122945 - 2² = 1122941 is a prime.

It is a super-2 number, since 2×1122945² = 2522010946050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1122941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226 + ... + 1515.

It is an arithmetic number, because the mean of its divisors is an integer number (114972).

2^1122945 is an apocalyptic number.

1122945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1122945 is a deficient number, since it is larger than the sum of its proper divisors (716607).

1122945 is a wasteful number, since it uses less digits than its factorization.

1122945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1792.

The product of its digits is 720, while the sum is 24.

The square root of 1122945 is about 1059.6909926955. The cubic root of 1122945 is about 103.9408255579.

The spelling of 1122945 in words is "one million, one hundred twenty-two thousand, nine hundred forty-five".