142166021142 has 128 divisors (see below), whose sum is σ = 324801404928. Its totient is φ = 41219481600.

The previous prime is 142166021113. The next prime is 142166021147. The reversal of 142166021142 is 241120661241.

It is a super-2 number, since 2×142166021142² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142166021147) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 62325042 + ... + 62327322.

It is an arithmetic number, because the mean of its divisors is an integer number (2537510976).

Almost surely, 2^142166021142 is an apocalyptic number.

142166021142 is an abundant number, since it is smaller than the sum of its proper divisors (182635383786).

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

142166021142 is a wasteful number, since it uses less digits than its factorization.

142166021142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3214.

The product of its (nonzero) digits is 4608, while the sum is 30.

Adding to 142166021142 its reverse (241120661241), we get a palindrome (383286682383).

The spelling of 142166021142 in words is "one hundred forty-two billion, one hundred sixty-six million, twenty-one thousand, one hundred forty-two".