1042660447 has 4 divisors (see below), whose sum is σ = 1048687560. Its totient is φ = 1036633336.

The previous prime is 1042660427. The next prime is 1042660477. The reversal of 1042660447 is 7440662401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7440662401 = 13697 ⋅543233.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042660447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042660427) 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 3 ways as a sum of consecutive naturals, for example, 3013297 + ... + 3013642.

It is an arithmetic number, because the mean of its divisors is an integer number (262171890).

Almost surely, 2^1042660447 is an apocalyptic number.

1042660447 is a deficient number, since it is larger than the sum of its proper divisors (6027113).

1042660447 is an equidigital number, since it uses as much as digits as its factorization.

1042660447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6027112.

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 1042660447 is about 32290.2531269112. The cubic root of 1042660447 is about 1014.0225966796.

The spelling of 1042660447 in words is "one billion, forty-two million, six hundred sixty thousand, four hundred forty-seven".