442622542 has 4 divisors (see below), whose sum is σ = 663933816. Its totient is φ = 221311270.

The previous prime is 442622539. The next prime is 442622549. The reversal of 442622542 is 245226244.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442622549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110655634 + ... + 110655637.

It is an arithmetic number, because the mean of its divisors is an integer number (165983454).

Almost surely, 2^442622542 is an apocalyptic number.

442622542 is a deficient number, since it is larger than the sum of its proper divisors (221311274).

442622542 is a wasteful number, since it uses less digits than its factorization.

442622542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221311273.

The product of its digits is 30720, while the sum is 31.

The square root of 442622542 is about 21038.5964836060. The cubic root of 442622542 is about 762.0986213957.

Adding to 442622542 its reverse (245226244), we get a palindrome (687848786).

The spelling of 442622542 in words is "four hundred forty-two million, six hundred twenty-two thousand, five hundred forty-two".