1122455640 has 32 divisors (see below), whose sum is σ = 3367367280. Its totient is φ = 299321472.

The previous prime is 1122455639. The next prime is 1122455641. The reversal of 1122455640 is 465542211.

It is an interprime number because it is at equal distance from previous prime (1122455639) and next prime (1122455641).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1122455598 and 1122455607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122455641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4676779 + ... + 4677018.

Almost surely, 2^1122455640 is an apocalyptic number.

1122455640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122455640 is an abundant number, since it is smaller than the sum of its proper divisors (2244911640).

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

1122455640 is a wasteful number, since it uses less digits than its factorization.

1122455640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9353811 (or 9353807 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 1122455640 is about 33503.0691131425. The cubic root of 1122455640 is about 1039.2572482642.

Adding to 1122455640 its reverse (465542211), we get a palindrome (1587997851).

The spelling of 1122455640 in words is "one billion, one hundred twenty-two million, four hundred fifty-five thousand, six hundred forty".