142100042244021 has 12 divisors (see below), whose sum is σ = 205255870987648. Its totient is φ = 94733244074664.

The previous prime is 142100042243977. The next prime is 142100042244053. The reversal of 142100042244021 is 120442240001241.

142100042244021 is a `hidden beast` number, since 1 + 4 + 210 + 0 + 0 + 4 + 2 + 2 + 440 + 2 + 1 = 666.

It is not a de Polignac number, because 142100042244021 - 2¹⁰ = 142100042242997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142100042244091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1775635 + ... + 16951488.

Almost surely, 2^{142100042244021} is an apocalyptic number.

It is an amenable number.

142100042244021 is a deficient number, since it is larger than the sum of its proper divisors (63155828743627).

142100042244021 is a wasteful number, since it uses less digits than its factorization.

142100042244021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19570232 (or 19570229 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 27.

Adding to 142100042244021 its reverse (120442240001241), we get a palindrome (262542282245262).

The spelling of 142100042244021 in words is "one hundred forty-two trillion, one hundred billion, forty-two million, two hundred forty-four thousand, twenty-one".