1122154 has 12 divisors (see below), whose sum is σ = 1850562. Its totient is φ = 509960.

The previous prime is 1122139. The next prime is 1122157. The reversal of 1122154 is 4512211.

It can be written as a sum of positive squares in only one way, i.e., 1046529 + 75625 = 1023^2 + 275^2 .

It is not an unprimeable number, because it can be changed into a prime (1122157) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2077 + ... + 2560.

2^1122154 is an apocalyptic number.

1122154 is a deficient number, since it is larger than the sum of its proper divisors (728408).

1122154 is a wasteful number, since it uses less digits than its factorization.

1122154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4661 (or 4650 counting only the distinct ones).

The product of its digits is 80, while the sum is 16.

The square root of 1122154 is about 1059.3177049403. The cubic root of 1122154 is about 103.9164145953.

Adding to 1122154 its reverse (4512211), we get a palindrome (5634365).

The spelling of 1122154 in words is "one million, one hundred twenty-two thousand, one hundred fifty-four".