1065040642 has 4 divisors (see below), whose sum is σ = 1597560966. Its totient is φ = 532520320.

The previous prime is 1065040621. The next prime is 1065040673. The reversal of 1065040642 is 2460405601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1023296121 + 41744521 = 31989^2 + 6461^2 .

It is a super-2 number, since 2×1065040642² = 2268623138223544328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1065040642.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266260159 + ... + 266260162.

Almost surely, 2^1065040642 is an apocalyptic number.

1065040642 is a deficient number, since it is larger than the sum of its proper divisors (532520324).

1065040642 is an equidigital number, since it uses as much as digits as its factorization.

1065040642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532520323.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1065040642 is about 32634.9604258991. The cubic root of 1065040642 is about 1021.2264633044.

The spelling of 1065040642 in words is "one billion, sixty-five million, forty thousand, six hundred forty-two".