1122045540 has 96 divisors (see below), whose sum is σ = 3916975104. Its totient is φ = 233151360.

The previous prime is 1122045497. The next prime is 1122045541. The reversal of 1122045540 is 455402211.

It is a self number, because there is not a number n which added to its sum of digits gives 1122045540.

It is not an unprimeable number, because it can be changed into a prime (1122045541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116814 + ... + 126053.

It is an arithmetic number, because the mean of its divisors is an integer number (40801824).

Almost surely, 2^1122045540 is an apocalyptic number.

1122045540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122045540 is an abundant number, since it is smaller than the sum of its proper divisors (2794929564).

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

1122045540 is a wasteful number, since it uses less digits than its factorization.

1122045540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242897 (or 242895 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 1122045540 is about 33496.9482192035. The cubic root of 1122045540 is about 1039.1306652920.

Adding to 1122045540 its reverse (455402211), we get a palindrome (1577447751).

The spelling of 1122045540 in words is "one billion, one hundred twenty-two million, forty-five thousand, five hundred forty".