142271238 has 16 divisors (see below), whose sum is σ = 296914176. Its totient is φ = 45361800.

The previous prime is 142271231. The next prime is 142271251. The reversal of 142271238 is 832172241.

It is a super-2 number, since 2×142271238² = 40482210324105288, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142271231) 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 7 ways as a sum of consecutive naturals, for example, 515338 + ... + 515613.

It is an arithmetic number, because the mean of its divisors is an integer number (18557136).

Almost surely, 2^142271238 is an apocalyptic number.

142271238 is an abundant number, since it is smaller than the sum of its proper divisors (154642938).

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

142271238 is a wasteful number, since it uses less digits than its factorization.

142271238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030979.

The product of its digits is 5376, while the sum is 30.

The square root of 142271238 is about 11927.7507519230. The cubic root of 142271238 is about 522.0423109815.

The spelling of 142271238 in words is "one hundred forty-two million, two hundred seventy-one thousand, two hundred thirty-eight".