442020342 has 16 divisors (see below), whose sum is σ = 888007680. Its totient is φ = 146678952.

The previous prime is 442020323. The next prime is 442020347. The reversal of 442020342 is 243020244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442020347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163842 + ... + 166517.

It is an arithmetic number, because the mean of its divisors is an integer number (55500480).

Almost surely, 2^442020342 is an apocalyptic number.

442020342 is an abundant number, since it is smaller than the sum of its proper divisors (445987338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442020342 is a wasteful number, since it uses less digits than its factorization.

442020342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330587.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 442020342 is about 21024.2798211972. The cubic root of 442020342 is about 761.7528459058.

Adding to 442020342 its reverse (243020244), we get a palindrome (685040586).

The spelling of 442020342 in words is "four hundred forty-two million, twenty thousand, three hundred forty-two".