442320524 has 12 divisors (see below), whose sum is σ = 799030848. Its totient is φ = 214026000.

The previous prime is 442320503. The next prime is 442320611. The reversal of 442320524 is 425023244.

It is a happy number.

It is a super-5 number, since 5×442320524⁵ (a number of 44 digits) contains 55555 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442320493 and 442320502.

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, 1783427 + ... + 1783674.

It is an arithmetic number, because the mean of its divisors is an integer number (66585904).

Almost surely, 2^442320524 is an apocalyptic number.

It is an amenable number.

442320524 is a deficient number, since it is larger than the sum of its proper divisors (356710324).

442320524 is a wasteful number, since it uses less digits than its factorization.

442320524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3567136 (or 3567134 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 442320524 is about 21031.4175461380. The cubic root of 442320524 is about 761.9252457764.

Adding to 442320524 its reverse (425023244), we get a palindrome (867343768).

The spelling of 442320524 in words is "four hundred forty-two million, three hundred twenty thousand, five hundred twenty-four".