442002430 has 8 divisors (see below), whose sum is σ = 795604392. Its totient is φ = 176800968.

The previous prime is 442002419. The next prime is 442002437. The reversal of 442002430 is 34200244.

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

It is a super-2 number, since 2×442002430² = 390732296251809800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442002398 and 442002407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442002437) 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, 22100112 + ... + 22100131.

It is an arithmetic number, because the mean of its divisors is an integer number (99450549).

Almost surely, 2^442002430 is an apocalyptic number.

442002430 is a deficient number, since it is larger than the sum of its proper divisors (353601962).

442002430 is a wasteful number, since it uses less digits than its factorization.

442002430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44200250.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 442002430 is about 21023.8538332057. The cubic root of 442002430 is about 761.7425562578.

Adding to 442002430 its reverse (34200244), we get a palindrome (476202674).

The spelling of 442002430 in words is "four hundred forty-two million, two thousand, four hundred thirty".