142158506 has 24 divisors (see below), whose sum is σ = 248781060. Its totient is φ = 60746112.

The previous prime is 142158481. The next prime is 142158509. The reversal of 142158506 is 605851241.

It can be written as a sum of positive squares in 2 ways, for example, as 139452481 + 2706025 = 11809^2 + 1645^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (142158509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34610 + ... + 38498.

Almost surely, 2^142158506 is an apocalyptic number.

142158506 is a deficient number, since it is larger than the sum of its proper divisors (106622554).

142158506 is a wasteful number, since it uses less digits than its factorization.

142158506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4278 (or 4271 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 142158506 is about 11923.0241969057. The cubic root of 142158506 is about 521.9043903321.

The spelling of 142158506 in words is "one hundred forty-two million, one hundred fifty-eight thousand, five hundred six".