2942721606 has 64 divisors (see below), whose sum is σ = 6655426560. Its totient is φ = 859673760.

The previous prime is 2942721569. The next prime is 2942721619. The reversal of 2942721606 is 6061272492.

It is a super-2 number, since 2×2942721606² = 17319220900838438472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200755 + ... + 214913.

It is an arithmetic number, because the mean of its divisors is an integer number (103991040).

Almost surely, 2^2942721606 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2942721606, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3327713280).

2942721606 is an abundant number, since it is smaller than the sum of its proper divisors (3712704954).

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

2942721606 is a wasteful number, since it uses less digits than its factorization.

2942721606 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14289.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 2942721606 is about 54246.8580288297. The cubic root of 2942721606 is about 1433.0116660660.

The spelling of 2942721606 in words is "two billion, nine hundred forty-two million, seven hundred twenty-one thousand, six hundred six".