442102140 has 36 divisors (see below), whose sum is σ = 1341043704. Its totient is φ = 117893856.

The previous prime is 442102123. The next prime is 442102231. The reversal of 442102140 is 41201244.

442102140 is a `hidden beast` number, since 442 + 10 + 214 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1227882 + ... + 1228241.

It is an arithmetic number, because the mean of its divisors is an integer number (37251214).

Almost surely, 2^442102140 is an apocalyptic number.

It is an amenable number.

442102140 is an abundant number, since it is smaller than the sum of its proper divisors (898941564).

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

442102140 is a wasteful number, since it uses less digits than its factorization.

442102140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456138 (or 2456133 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 442102140 is about 21026.2250534897. The cubic root of 442102140 is about 761.7998316892.

Adding to 442102140 its reverse (41201244), we get a palindrome (483303384).

The spelling of 442102140 in words is "four hundred forty-two million, one hundred two thousand, one hundred forty".