1120438640 has 40 divisors (see below), whose sum is σ = 2660454720. Its totient is φ = 438638336.

The previous prime is 1120438639. The next prime is 1120438681. The reversal of 1120438640 is 468340211.

It is a tau number, because it is divible by the number of its divisors (40).

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, 145235 + ... + 152754.

It is an arithmetic number, because the mean of its divisors is an integer number (66511368).

Almost surely, 2^1120438640 is an apocalyptic number.

1120438640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1120438640 is an abundant number, since it is smaller than the sum of its proper divisors (1540016080).

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

1120438640 is a wasteful number, since it uses less digits than its factorization.

1120438640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298049 (or 298043 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 1120438640 is about 33472.9538583018. The cubic root of 1120438640 is about 1038.6343762236.

Adding to 1120438640 its reverse (468340211), we get a palindrome (1588778851).

The spelling of 1120438640 in words is "one billion, one hundred twenty million, four hundred thirty-eight thousand, six hundred forty".