142314021 has 12 divisors (see below), whose sum is σ = 217656972. Its totient is φ = 89294976.

The previous prime is 142314001. The next prime is 142314023. The reversal of 142314021 is 120413241.

It can be written as a sum of positive squares in 2 ways, for example, as 90041121 + 52272900 = 9489^2 + 7230^2 .

It is not a de Polignac number, because 142314021 - 2⁵ = 142313989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142313985 and 142314003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142314023) 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 11 ways as a sum of consecutive naturals, for example, 464926 + ... + 465231.

It is an arithmetic number, because the mean of its divisors is an integer number (18138081).

Almost surely, 2^142314021 is an apocalyptic number.

It is an amenable number.

142314021 is a deficient number, since it is larger than the sum of its proper divisors (75342951).

142314021 is a wasteful number, since it uses less digits than its factorization.

142314021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 930180 (or 930177 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 142314021 is about 11929.5440399036. The cubic root of 142314021 is about 522.0946342716.

Adding to 142314021 its reverse (120413241), we get a palindrome (262727262).

The spelling of 142314021 in words is "one hundred forty-two million, three hundred fourteen thousand, twenty-one".