1009747742 has 16 divisors (see below), whose sum is σ = 1688124240. Its totient is φ = 450165888.

The previous prime is 1009747741. The next prime is 1009747757. The reversal of 1009747742 is 2477479001.

It is a self number, because there is not a number n which added to its sum of digits gives 1009747742.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1009747741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 780893 + ... + 782184.

It is an arithmetic number, because the mean of its divisors is an integer number (105507765).

Almost surely, 2^1009747742 is an apocalyptic number.

1009747742 is a deficient number, since it is larger than the sum of its proper divisors (678376498).

1009747742 is a wasteful number, since it uses less digits than its factorization.

1009747742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563115.

The product of its (nonzero) digits is 98784, while the sum is 41.

The square root of 1009747742 is about 31776.5281615220. The cubic root of 1009747742 is about 1003.2387465300.

The spelling of 1009747742 in words is "one billion, nine million, seven hundred forty-seven thousand, seven hundred forty-two".