142213331 has 12 divisors (see below), whose sum is σ = 154330488. Its totient is φ = 130987584.

The previous prime is 142213327. The next prime is 142213339. The reversal of 142213331 is 133312241.

It is not a de Polignac number, because 142213331 - 2² = 142213327 is a prime.

It is a super-2 number, since 2×142213331² = 40449263028231122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142213339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148751 + ... + 149703.

It is an arithmetic number, because the mean of its divisors is an integer number (12860874).

Almost surely, 2^142213331 is an apocalyptic number.

142213331 is a deficient number, since it is larger than the sum of its proper divisors (12117157).

142213331 is an equidigital number, since it uses as much as digits as its factorization.

142213331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1862 (or 1849 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 142213331 is about 11925.3230983483. The cubic root of 142213331 is about 521.9714744422.

Adding to 142213331 its reverse (133312241), we get a palindrome (275525572).

The spelling of 142213331 in words is "one hundred forty-two million, two hundred thirteen thousand, three hundred thirty-one".