142214121 has 36 divisors (see below), whose sum is σ = 239861700. Its totient is φ = 80958528.

The previous prime is 142214101. The next prime is 142214167. The reversal of 142214121 is 121412241.

It can be written as a sum of positive squares in 2 ways, for example, as 56836521 + 85377600 = 7539^2 + 9240^2 .

It is not a de Polignac number, because 142214121 - 2⁵ = 142214089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142214094 and 142214103.

It is not an unprimeable number, because it can be changed into a prime (142214101) 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 35 ways as a sum of consecutive naturals, for example, 171135 + ... + 171963.

It is an arithmetic number, because the mean of its divisors is an integer number (6662825).

Almost surely, 2^142214121 is an apocalyptic number.

It is an amenable number.

142214121 is a deficient number, since it is larger than the sum of its proper divisors (97647579).

142214121 is a wasteful number, since it uses less digits than its factorization.

142214121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1238 (or 1228 counting only the distinct ones).

The product of its digits is 128, while the sum is 18.

The square root of 142214121 is about 11925.3562210946. The cubic root of 142214121 is about 521.9724409637.

Adding to 142214121 its reverse (121412241), we get a palindrome (263626362).

The spelling of 142214121 in words is "one hundred forty-two million, two hundred fourteen thousand, one hundred twenty-one".