6911257442 has 16 divisors (see below), whose sum is σ = 10939173120. Its totient is φ = 3268242912.

The previous prime is 6911257427. The next prime is 6911257447. The reversal of 6911257442 is 2447521196.

It is a self number, because there is not a number n which added to its sum of digits gives 6911257442.

It is not an unprimeable number, because it can be changed into a prime (6911257447) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 839978 + ... + 848165.

It is an arithmetic number, because the mean of its divisors is an integer number (683698320).

Almost surely, 2^6911257442 is an apocalyptic number.

6911257442 is a deficient number, since it is larger than the sum of its proper divisors (4027915678).

6911257442 is a wasteful number, since it uses less digits than its factorization.

6911257442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1688257.

The product of its digits is 120960, while the sum is 41.

The square root of 6911257442 is about 83133.9728510553. The cubic root of 6911257442 is about 1904.8130459519.

The spelling of 6911257442 in words is "six billion, nine hundred eleven million, two hundred fifty-seven thousand, four hundred forty-two".