7122003840 has 512 divisors, whose sum is σ = 29172326400. Its totient is φ = 1608450048.

The previous prime is 7122003827. The next prime is 7122003857. The reversal of 7122003840 is 483002217.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 63 ways as a sum of consecutive naturals, for example, 11732817 + ... + 11733423.

It is an arithmetic number, because the mean of its divisors is an integer number (56977200).

Almost surely, 2^7122003840 is an apocalyptic number.

7122003840 is a gapful number since it is divisible by the number (70) 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 7122003840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14586163200).

7122003840 is an abundant number, since it is smaller than the sum of its proper divisors (22050322560).

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

7122003840 is a wasteful number, since it uses less digits than its factorization.

7122003840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739 (or 721 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 7122003840 is about 84391.9654943526. The cubic root of 7122003840 is about 1923.9808032570.

The spelling of 7122003840 in words is "seven billion, one hundred twenty-two million, three thousand, eight hundred forty".