142004646 has 72 divisors (see below), whose sum is σ = 359965944. Its totient is φ = 40340160.

The previous prime is 142004641. The next prime is 142004663. The reversal of 142004646 is 646400241.

142004646 is a `hidden beast` number, since 14 + 2 + 0 + 0 + 4 + 646 = 666.

142004646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142004641) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 205161 + ... + 205851.

It is an arithmetic number, because the mean of its divisors is an integer number (4999527).

Almost surely, 2^142004646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142004646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179982972).

142004646 is an abundant number, since it is smaller than the sum of its proper divisors (217961298).

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

142004646 is a wasteful number, since it uses less digits than its factorization.

142004646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946 (or 936 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 142004646 is about 11916.5702280480. The cubic root of 142004646 is about 521.7160343925.

Adding to 142004646 its reverse (646400241), we get a palindrome (788404887).

The spelling of 142004646 in words is "one hundred forty-two million, four thousand, six hundred forty-six".