442420125 has 32 divisors (see below), whose sum is σ = 841361664. Its totient is φ = 202248000.

The previous prime is 442420117. The next prime is 442420171. The reversal of 442420125 is 521024244.

It is a happy number.

It is not a de Polignac number, because 442420125 - 2³ = 442420117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 442420095 and 442420104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81646 + ... + 86895.

It is an arithmetic number, because the mean of its divisors is an integer number (26292552).

Almost surely, 2^442420125 is an apocalyptic number.

It is an amenable number.

442420125 is a deficient number, since it is larger than the sum of its proper divisors (398941539).

442420125 is a wasteful number, since it uses less digits than its factorization.

442420125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168566 (or 168556 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 442420125 is about 21033.7853226660. The cubic root of 442420125 is about 761.9824311709.

Adding to 442420125 its reverse (521024244), we get a palindrome (963444369).

The spelling of 442420125 in words is "four hundred forty-two million, four hundred twenty thousand, one hundred twenty-five".