442420252 has 6 divisors (see below), whose sum is σ = 774235448. Its totient is φ = 221210124.

The previous prime is 442420247. The next prime is 442420267. The reversal of 442420252 is 252024244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55302528 + ... + 55302535.

Almost surely, 2^442420252 is an apocalyptic number.

It is an amenable number.

442420252 is a deficient number, since it is larger than the sum of its proper divisors (331815196).

442420252 is a wasteful number, since it uses less digits than its factorization.

442420252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110605067 (or 110605065 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 442420252 is about 21033.7883416183. The cubic root of 442420252 is about 761.9825040818.

Adding to 442420252 its reverse (252024244), we get a palindrome (694444496).

The spelling of 442420252 in words is "four hundred forty-two million, four hundred twenty thousand, two hundred fifty-two".