142100646 has 32 divisors (see below), whose sum is σ = 298114560. Its totient is φ = 45102816.

The previous prime is 142100633. The next prime is 142100657. The reversal of 142100646 is 646001241.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3625 + ... + 17243.

It is an arithmetic number, because the mean of its divisors is an integer number (9316080).

Almost surely, 2^142100646 is an apocalyptic number.

142100646 is an abundant number, since it is smaller than the sum of its proper divisors (156013914).

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

142100646 is a wasteful number, since it uses less digits than its factorization.

142100646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13708.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 142100646 is about 11920.5975521364. The cubic root of 142100646 is about 521.8335738735.

Adding to 142100646 its reverse (646001241), we get a palindrome (788101887).

The spelling of 142100646 in words is "one hundred forty-two million, one hundred thousand, six hundred forty-six".