1120079640 has 128 divisors (see below), whose sum is σ = 3570336000. Its totient is φ = 280309248.

The previous prime is 1120079593. The next prime is 1120079647. The reversal of 1120079640 is 469700211.

It is a happy number.

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 = 1120079598 and 1120079607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1120079647) 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, 246267 + ... + 250773.

It is an arithmetic number, because the mean of its divisors is an integer number (27893250).

Almost surely, 2^1120079640 is an apocalyptic number.

1120079640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1120079640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1785168000).

1120079640 is an abundant number, since it is smaller than the sum of its proper divisors (2450256360).

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

1120079640 is a wasteful number, since it uses less digits than its factorization.

1120079640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4649 (or 4645 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 1120079640 is about 33467.5908902927. The cubic root of 1120079640 is about 1038.5234346815.

Adding to 1120079640 its reverse (469700211), we get a palindrome (1589779851).

The spelling of 1120079640 in words is "one billion, one hundred twenty million, seventy-nine thousand, six hundred forty".