442403121 has 8 divisors (see below), whose sum is σ = 624569184. Its totient is φ = 277586240.

The previous prime is 442403119. The next prime is 442403123. The reversal of 442403121 is 121304244.

It is an interprime number because it is at equal distance from previous prime (442403119) and next prime (442403123).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 442403121 - 2¹ = 442403119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442403123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4337235 + ... + 4337336.

It is an arithmetic number, because the mean of its divisors is an integer number (78071148).

Almost surely, 2^442403121 is an apocalyptic number.

It is an amenable number.

442403121 is a deficient number, since it is larger than the sum of its proper divisors (182166063).

442403121 is a wasteful number, since it uses less digits than its factorization.

442403121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8674591.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 442403121 is about 21033.3811119373. The cubic root of 442403121 is about 761.9726690206.

Adding to 442403121 its reverse (121304244), we get a palindrome (563707365).

The spelling of 442403121 in words is "four hundred forty-two million, four hundred three thousand, one hundred twenty-one".