6942496221 has 48 divisors (see below), whose sum is σ = 10767144960. Its totient is φ = 4302305280.

The previous prime is 6942496217. The next prime is 6942496237. The reversal of 6942496221 is 1226942496.

It is not a de Polignac number, because 6942496221 - 2² = 6942496217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6942496291) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 811261 + ... + 819773.

It is an arithmetic number, because the mean of its divisors is an integer number (224315520).

Almost surely, 2^6942496221 is an apocalyptic number.

It is an amenable number.

6942496221 is a deficient number, since it is larger than the sum of its proper divisors (3824648739).

6942496221 is a wasteful number, since it uses less digits than its factorization.

6942496221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8666 (or 8663 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 6942496221 is about 83321.6431727075. The cubic root of 6942496221 is about 1907.6786415054.

The spelling of 6942496221 in words is "six billion, nine hundred forty-two million, four hundred ninety-six thousand, two hundred twenty-one".