442520747 has 2 divisors, whose sum is σ = 442520748. Its totient is φ = 442520746.

The previous prime is 442520719. The next prime is 442520803. The reversal of 442520747 is 747025244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442520747 - 2¹² = 442516651 is a prime.

It is a super-2 number, since 2×442520747² = 391649223050876018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (442520647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221260373 + 221260374.

It is an arithmetic number, because the mean of its divisors is an integer number (221260374).

Almost surely, 2^442520747 is an apocalyptic number.

442520747 is a deficient number, since it is larger than the sum of its proper divisors (1).

442520747 is an equidigital number, since it uses as much as digits as its factorization.

442520747 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62720, while the sum is 35.

The square root of 442520747 is about 21036.1771004144. The cubic root of 442520747 is about 762.0401940528.

The spelling of 442520747 in words is "four hundred forty-two million, five hundred twenty thousand, seven hundred forty-seven".