142412231 has 4 divisors (see below), whose sum is σ = 153367032. Its totient is φ = 131457432.

The previous prime is 142412227. The next prime is 142412261. The reversal of 142412231 is 132214241.

142412231 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132214241 = 151 ⋅875591.

It is a cyclic number.

It is not a de Polignac number, because 142412231 - 2² = 142412227 is a prime.

It is a super-2 number, since 2×142412231² = 40562487076794722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142412261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5477381 + ... + 5477406.

It is an arithmetic number, because the mean of its divisors is an integer number (38341758).

Almost surely, 2^142412231 is an apocalyptic number.

142412231 is a deficient number, since it is larger than the sum of its proper divisors (10954801).

142412231 is a wasteful number, since it uses less digits than its factorization.

142412231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10954800.

The product of its digits is 384, while the sum is 20.

The square root of 142412231 is about 11933.6595812014. The cubic root of 142412231 is about 522.2147047172.

Adding to 142412231 its reverse (132214241), we get a palindrome (274626472).

The spelling of 142412231 in words is "one hundred forty-two million, four hundred twelve thousand, two hundred thirty-one".