1122140 has 24 divisors (see below), whose sum is σ = 2481360. Its totient is φ = 425088.

The previous prime is 1122139. The next prime is 1122157. The reversal of 1122140 is 412211.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1097 + ... + 1856.

It is an arithmetic number, because the mean of its divisors is an integer number (103390).

2^1122140 is an apocalyptic number.

1122140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122140 is an abundant number, since it is smaller than the sum of its proper divisors (1359220).

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

1122140 is a wasteful number, since it uses less digits than its factorization.

1122140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2981 (or 2979 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1122140 is about 1059.3110968927. The cubic root of 1122140 is about 103.9159824396.

Adding to 1122140 its reverse (412211), we get a palindrome (1534351).

It can be divided in two parts, 1122 and 140, that multiplied together give a triangular number (157080 = T₅₆₀).

The spelling of 1122140 in words is "one million, one hundred twenty-two thousand, one hundred forty".