2942721180 has 144 divisors (see below), whose sum is σ = 10255137984. Its totient is φ = 669081600.

The previous prime is 2942721163. The next prime is 2942721193. The reversal of 2942721180 is 811272492.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 237130 + ... + 249230.

It is an arithmetic number, because the mean of its divisors is an integer number (71216236).

Almost surely, 2^2942721180 is an apocalyptic number.

2942721180 is a gapful number since it is divisible by the number (20) 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 2942721180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5127568992).

2942721180 is an abundant number, since it is smaller than the sum of its proper divisors (7312416804).

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

2942721180 is a wasteful number, since it uses less digits than its factorization.

2942721180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12316 (or 12311 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 2942721180 is about 54246.8541023348. The cubic root of 2942721180 is about 1433.0115969166.

The spelling of 2942721180 in words is "two billion, nine hundred forty-two million, seven hundred twenty-one thousand, one hundred eighty".