142312011 has 4 divisors (see below), whose sum is σ = 189749352. Its totient is φ = 94874672.

The previous prime is 142312007. The next prime is 142312039. The reversal of 142312011 is 110213241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110213241 = 3 ⋅36737747.

It is a cyclic number.

It is not a de Polignac number, because 142312011 - 2² = 142312007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (142312061) 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 3 ways as a sum of consecutive naturals, for example, 23718666 + ... + 23718671.

It is an arithmetic number, because the mean of its divisors is an integer number (47437338).

Almost surely, 2^142312011 is an apocalyptic number.

142312011 is a deficient number, since it is larger than the sum of its proper divisors (47437341).

142312011 is an equidigital number, since it uses as much as digits as its factorization.

142312011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47437340.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 142312011 is about 11929.4597949781. The cubic root of 142312011 is about 522.0921762914.

Adding to 142312011 its reverse (110213241), we get a palindrome (252525252).

The spelling of 142312011 in words is "one hundred forty-two million, three hundred twelve thousand, eleven".