442023073 has 2 divisors, whose sum is σ = 442023074. Its totient is φ = 442023072.

The previous prime is 442023061. The next prime is 442023089. The reversal of 442023073 is 370320244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 256736529 + 185286544 = 16023^2 + 13612^2 .

It is a cyclic number.

It is not a de Polignac number, because 442023073 - 2²¹ = 439925921 is a prime.

It is not a weakly prime, because it can be changed into another prime (442023473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221011536 + 221011537.

It is an arithmetic number, because the mean of its divisors is an integer number (221011537).

Almost surely, 2^442023073 is an apocalyptic number.

It is an amenable number.

442023073 is a deficient number, since it is larger than the sum of its proper divisors (1).

442023073 is an equidigital number, since it uses as much as digits as its factorization.

442023073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 25.

The square root of 442023073 is about 21024.3447698139. The cubic root of 442023073 is about 761.7544147196.

The spelling of 442023073 in words is "four hundred forty-two million, twenty-three thousand, seventy-three".