442143242 has 16 divisors (see below), whose sum is σ = 704531520. Its totient is φ = 207384768.

The previous prime is 442143223. The next prime is 442143253. The reversal of 442143242 is 242341244.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10742 + ... + 31617.

It is an arithmetic number, because the mean of its divisors is an integer number (44033220).

Almost surely, 2^442143242 is an apocalyptic number.

442143242 is a deficient number, since it is larger than the sum of its proper divisors (262388278).

442143242 is a wasteful number, since it uses less digits than its factorization.

442143242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42685.

The product of its digits is 6144, while the sum is 26.

The square root of 442143242 is about 21027.2024292344. The cubic root of 442143242 is about 761.8234389989.

Adding to 442143242 its reverse (242341244), we get a palindrome (684484486).

The spelling of 442143242 in words is "four hundred forty-two million, one hundred forty-three thousand, two hundred forty-two".