7122407740 has 72 divisors (see below), whose sum is σ = 17619456960. Its totient is φ = 2411031168.

The previous prime is 7122407729. The next prime is 7122407753. The reversal of 7122407740 is 477042217.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7122407696 and 7122407705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31422 + ... + 123418.

It is an arithmetic number, because the mean of its divisors is an integer number (244714680).

Almost surely, 2^7122407740 is an apocalyptic number.

7122407740 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 7122407740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8809728480).

7122407740 is an abundant number, since it is smaller than the sum of its proper divisors (10497049220).

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

7122407740 is a wasteful number, since it uses less digits than its factorization.

7122407740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92099 (or 92090 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 34.

The square root of 7122407740 is about 84394.3584607407. The cubic root of 7122407740 is about 1924.0171732251.

Adding to 7122407740 its reverse (477042217), we get a palindrome (7599449957).

The spelling of 7122407740 in words is "seven billion, one hundred twenty-two million, four hundred seven thousand, seven hundred forty".