312142142 has 16 divisors (see below), whose sum is σ = 504811440. Its totient is φ = 143899392.

The previous prime is 312142141. The next prime is 312142157. The reversal of 312142142 is 241241213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312142141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17693 + ... + 30615.

It is an arithmetic number, because the mean of its divisors is an integer number (31550715).

Almost surely, 2^312142142 is an apocalyptic number.

312142142 is a deficient number, since it is larger than the sum of its proper divisors (192669298).

312142142 is a wasteful number, since it uses less digits than its factorization.

312142142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13867.

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

The square root of 312142142 is about 17667.5448775431. The cubic root of 312142142 is about 678.3452715929.

Adding to 312142142 its reverse (241241213), we get a palindrome (553383355).

The spelling of 312142142 in words is "three hundred twelve million, one hundred forty-two thousand, one hundred forty-two".