142252131 has 8 divisors (see below), whose sum is σ = 216765184. Its totient is φ = 81286920.

The previous prime is 142252109. The next prime is 142252151. The reversal of 142252131 is 131252241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142252131 - 2⁶ = 142252067 is a prime.

It is a super-2 number, since 2×142252131² = 40471337548082322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 6773911 = 142252131 / (1 + 4 + 2 + 2 + 5 + 2 + 1 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142252098 and 142252107.

It is not an unprimeable number, because it can be changed into a prime (142252151) 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, 3386935 + ... + 3386976.

It is an arithmetic number, because the mean of its divisors is an integer number (27095648).

Almost surely, 2^142252131 is an apocalyptic number.

142252131 is a deficient number, since it is larger than the sum of its proper divisors (74513053).

142252131 is an equidigital number, since it uses as much as digits as its factorization.

142252131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6773921.

The product of its digits is 480, while the sum is 21.

The square root of 142252131 is about 11926.9497777093. The cubic root of 142252131 is about 522.0189398744.

The spelling of 142252131 in words is "one hundred forty-two million, two hundred fifty-two thousand, one hundred thirty-one".