442121701 has 4 divisors (see below), whose sum is σ = 505281952. Its totient is φ = 378961452.

The previous prime is 442121681. The next prime is 442121723. The reversal of 442121701 is 107121244.

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 442121701 - 2¹¹ = 442119653 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442121761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31580115 + ... + 31580128.

It is an arithmetic number, because the mean of its divisors is an integer number (126320488).

Almost surely, 2^442121701 is an apocalyptic number.

It is an amenable number.

442121701 is a deficient number, since it is larger than the sum of its proper divisors (63160251).

442121701 is an equidigital number, since it uses as much as digits as its factorization.

442121701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63160250.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 442121701 is about 21026.6902055459. The cubic root of 442121701 is about 761.8110669110.

Adding to 442121701 its reverse (107121244), we get a palindrome (549242945).

The spelling of 442121701 in words is "four hundred forty-two million, one hundred twenty-one thousand, seven hundred one".