7800342120 has 80 divisors (see below), whose sum is σ = 26217827460. Its totient is φ = 2080090368.

The previous prime is 7800342119. The next prime is 7800342161. The reversal of 7800342120 is 212430087.

It can be written as a sum of positive squares in 2 ways, for example, as 7788768516 + 11573604 = 88254^2 + 3402^2 .

It is a super-3 number, since 3×7800342120³ (a number of 31 digits) contains 333 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1200517 + ... + 1206996.

Almost surely, 2^7800342120 is an apocalyptic number.

It is an amenable number.

7800342120 is an abundant number, since it is smaller than the sum of its proper divisors (18417485340).

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

7800342120 is a wasteful number, since it uses less digits than its factorization.

7800342120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407536 (or 2407523 counting only the distinct ones).

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

The square root of 7800342120 is about 88319.5455151350. The cubic root of 7800342120 is about 1983.2214775480.

The spelling of 7800342120 in words is "seven billion, eight hundred million, three hundred forty-two thousand, one hundred twenty".