442100140 has 24 divisors (see below), whose sum is σ = 929057472. Its totient is φ = 176716800.

The previous prime is 442100137. The next prime is 442100149. The reversal of 442100140 is 41001244.

It is not an unprimeable number, because it can be changed into a prime (442100149) 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, 25117 + ... + 38923.

It is an arithmetic number, because the mean of its divisors is an integer number (38710728).

Almost surely, 2^442100140 is an apocalyptic number.

It is an amenable number.

442100140 is an abundant number, since it is smaller than the sum of its proper divisors (486957332).

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

442100140 is a wasteful number, since it uses less digits than its factorization.

442100140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15417 (or 15415 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 442100140 is about 21026.1774937814. The cubic root of 442100140 is about 761.7986829336.

Adding to 442100140 its reverse (41001244), we get a palindrome (483101384).

The spelling of 442100140 in words is "four hundred forty-two million, one hundred thousand, one hundred forty".