215055434142 has 24 divisors (see below), whose sum is σ = 466250855616. Its totient is φ = 71639388576.

The previous prime is 215055434081. The next prime is 215055434149. The reversal of 215055434142 is 241434550512.

215055434142 is a `hidden beast` number, since 2 + 1 + 505 + 5 + 4 + 3 + 4 + 142 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 215055434097 and 215055434106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215055434149) 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, 3784023 + ... + 3840434.

It is an arithmetic number, because the mean of its divisors is an integer number (19427118984).

Almost surely, 2^215055434142 is an apocalyptic number.

215055434142 is an abundant number, since it is smaller than the sum of its proper divisors (251195421474).

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

215055434142 is a wasteful number, since it uses less digits than its factorization.

215055434142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7626032 (or 7626029 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 215055434142 its reverse (241434550512), we get a palindrome (456489984654).

The spelling of 215055434142 in words is "two hundred fifteen billion, fifty-five million, four hundred thirty-four thousand, one hundred forty-two".