442001402 has 16 divisors (see below), whose sum is σ = 684536832. Its totient is φ = 213907680.

The previous prime is 442001381. The next prime is 442001407. The reversal of 442001402 is 204100244.

It is not an unprimeable number, because it can be changed into a prime (442001407) 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 7 ways as a sum of consecutive naturals, for example, 10808 + ... + 31635.

It is an arithmetic number, because the mean of its divisors is an integer number (42783552).

Almost surely, 2^442001402 is an apocalyptic number.

442001402 is a deficient number, since it is larger than the sum of its proper divisors (242535430).

442001402 is a wasteful number, since it uses less digits than its factorization.

442001402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42613.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 442001402 is about 21023.8293847719. The cubic root of 442001402 is about 761.7419657090.

Adding to 442001402 its reverse (204100244), we get a palindrome (646101646).

The spelling of 442001402 in words is "four hundred forty-two million, one thousand, four hundred two".