1069646742 has 64 divisors (see below), whose sum is σ = 2447444160. Its totient is φ = 346125312.

The previous prime is 1069646741. The next prime is 1069646779. The reversal of 1069646742 is 2476469601.

It is a super-2 number, since 2×1069646742² = 2288288305342429128, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1069646741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 275688 + ... + 279540.

It is an arithmetic number, because the mean of its divisors is an integer number (38241315).

Almost surely, 2^1069646742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1069646742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1223722080).

1069646742 is an abundant number, since it is smaller than the sum of its proper divisors (1377797418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1069646742 is a wasteful number, since it uses less digits than its factorization.

1069646742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4014 (or 4008 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 1069646742 is about 32705.4543157560. The cubic root of 1069646742 is about 1022.6965500331.

The spelling of 1069646742 in words is "one billion, sixty-nine million, six hundred forty-six thousand, seven hundred forty-two".