6242721907 has 2 divisors, whose sum is σ = 6242721908. Its totient is φ = 6242721906.

The previous prime is 6242721899. The next prime is 6242721943. The reversal of 6242721907 is 7091272426.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6242721907 - 2³ = 6242721899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6242721907.

It is not a weakly prime, because it can be changed into another prime (6242721977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3121360953 + 3121360954.

It is an arithmetic number, because the mean of its divisors is an integer number (3121360954).

Almost surely, 2^6242721907 is an apocalyptic number.

6242721907 is a deficient number, since it is larger than the sum of its proper divisors (1).

6242721907 is an equidigital number, since it uses as much as digits as its factorization.

6242721907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 6242721907 is about 79010.8973939671. The cubic root of 6242721907 is about 1841.3004656306.

The spelling of 6242721907 in words is "six billion, two hundred forty-two million, seven hundred twenty-one thousand, nine hundred seven".