442120522 has 8 divisors (see below), whose sum is σ = 664360416. Its totient is φ = 220667052.

The previous prime is 442120501. The next prime is 442120579. The reversal of 442120522 is 225021244.

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

It is a junction number, because it is equal to n+sod(n) for n = 442120493 and 442120502.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195198 + ... + 197449.

It is an arithmetic number, because the mean of its divisors is an integer number (83045052).

Almost surely, 2^442120522 is an apocalyptic number.

442120522 is a deficient number, since it is larger than the sum of its proper divisors (222239894).

442120522 is a wasteful number, since it uses less digits than its factorization.

442120522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393212.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 442120522 is about 21026.6621697311. The cubic root of 442120522 is about 761.8103897399.

Adding to 442120522 its reverse (225021244), we get a palindrome (667141766).

The spelling of 442120522 in words is "four hundred forty-two million, one hundred twenty thousand, five hundred twenty-two".