2942721626 has 12 divisors (see below), whose sum is σ = 4779746622. Its totient is φ = 1358179056.

The previous prime is 2942721619. The next prime is 2942721631. The reversal of 2942721626 is 6261272492.

It can be written as a sum of positive squares in 3 ways, for example, as 1459316401 + 1483405225 = 38201^2 + 38515^2 .

It is a super-2 number, since 2×2942721626² = 17319221136256167752, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4352801 + ... + 4353476.

Almost surely, 2^2942721626 is an apocalyptic number.

2942721626 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2942721626 is a deficient number, since it is larger than the sum of its proper divisors (1837024996).

2942721626 is a wasteful number, since it uses less digits than its factorization.

2942721626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8706305 (or 8706292 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 2942721626 is about 54246.8582131721. The cubic root of 2942721626 is about 1433.0116693125.

The spelling of 2942721626 in words is "two billion, nine hundred forty-two million, seven hundred twenty-one thousand, six hundred twenty-six".