442120997 has 4 divisors (see below), whose sum is σ = 447447840. Its totient is φ = 436794156.

The previous prime is 442120967. The next prime is 442121033. The reversal of 442120997 is 799021244.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 442120997 - 2¹⁶ = 442055461 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 442120997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442120907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2663297 + ... + 2663462.

It is an arithmetic number, because the mean of its divisors is an integer number (111861960).

Almost surely, 2^442120997 is an apocalyptic number.

It is an amenable number.

442120997 is a deficient number, since it is larger than the sum of its proper divisors (5326843).

442120997 is an equidigital number, since it uses as much as digits as its factorization.

442120997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5326842.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 442120997 is about 21026.6734649112. The cubic root of 442120997 is about 761.8106625613.

The spelling of 442120997 in words is "four hundred forty-two million, one hundred twenty thousand, nine hundred ninety-seven".