442140232121 has 32 divisors (see below), whose sum is σ = 518209781760. Its totient is φ = 369444950784.

The previous prime is 442140232117. The next prime is 442140232199. The reversal of 442140232121 is 121232041244.

It is not a de Polignac number, because 442140232121 - 2² = 442140232117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442140232321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16421156 + ... + 16448058.

It is an arithmetic number, because the mean of its divisors is an integer number (16194055680).

Almost surely, 2^442140232121 is an apocalyptic number.

It is an amenable number.

442140232121 is a deficient number, since it is larger than the sum of its proper divisors (76069549639).

442140232121 is a wasteful number, since it uses less digits than its factorization.

442140232121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27365.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 442140232121 its reverse (121232041244), we get a palindrome (563372273365).

The spelling of 442140232121 in words is "four hundred forty-two billion, one hundred forty million, two hundred thirty-two thousand, one hundred twenty-one".