142016646 has 16 divisors (see below), whose sum is σ = 284491008. Its totient is φ = 47262600.

The previous prime is 142016629. The next prime is 142016647. The reversal of 142016646 is 646610241.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142016647) 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, 14970 + ... + 22541.

It is an arithmetic number, because the mean of its divisors is an integer number (17780688).

Almost surely, 2^142016646 is an apocalyptic number.

142016646 is an abundant number, since it is smaller than the sum of its proper divisors (142474362).

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

142016646 is a wasteful number, since it uses less digits than its factorization.

142016646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38147.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 142016646 is about 11917.0737179897. The cubic root of 142016646 is about 521.7307297240.

Adding to 142016646 its reverse (646610241), we get a palindrome (788626887).

The spelling of 142016646 in words is "one hundred forty-two million, sixteen thousand, six hundred forty-six".