2942721605 has 8 divisors (see below), whose sum is σ = 3540890112. Its totient is φ = 2347761168.

The previous prime is 2942721569. The next prime is 2942721619. The reversal of 2942721605 is 5061272492.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2942721605 - 2¹⁴ = 2942705221 is a prime.

It is a super-2 number, since 2×2942721605² = 17319220889067552050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 799997 + ... + 803666.

It is an arithmetic number, because the mean of its divisors is an integer number (442611264).

Almost surely, 2^2942721605 is an apocalyptic number.

It is an amenable number.

2942721605 is a deficient number, since it is larger than the sum of its proper divisors (598168507).

2942721605 is a wasteful number, since it uses less digits than its factorization.

2942721605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1604035.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 2942721605 is about 54246.8580196125. The cubic root of 2942721605 is about 1433.0116659037.

The spelling of 2942721605 in words is "two billion, nine hundred forty-two million, seven hundred twenty-one thousand, six hundred five".