142504146 has 12 divisors (see below), whose sum is σ = 308759022. Its totient is φ = 47501376.

The previous prime is 142504139. The next prime is 142504147. The reversal of 142504146 is 641405241.

142504146 is a `hidden beast` number, since 14 + 2 + 504 + 146 = 666.

142504146 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 117614025 + 24890121 = 10845^2 + 4989^2 .

It is not an unprimeable number, because it can be changed into a prime (142504147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3958431 + ... + 3958466.

Almost surely, 2^142504146 is an apocalyptic number.

142504146 is an abundant number, since it is smaller than the sum of its proper divisors (166254876).

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

142504146 is a wasteful number, since it uses less digits than its factorization.

142504146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7916905 (or 7916902 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 142504146 is about 11937.5100418806. The cubic root of 142504146 is about 522.3270289687.

Adding to 142504146 its reverse (641405241), we get a palindrome (783909387).

The spelling of 142504146 in words is "one hundred forty-two million, five hundred four thousand, one hundred forty-six".