142212141 has 18 divisors (see below), whose sum is σ = 207605450. Its totient is φ = 93808800.

The previous prime is 142212139. The next prime is 142212179. The reversal of 142212141 is 141212241.

It can be written as a sum of positive squares in 3 ways, for example, as 86769225 + 55442916 = 9315^2 + 7446^2 .

It is not a de Polignac number, because 142212141 - 2¹ = 142212139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142212041) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 91035 + ... + 92583.

Almost surely, 2^142212141 is an apocalyptic number.

It is an amenable number.

142212141 is a deficient number, since it is larger than the sum of its proper divisors (65393309).

142212141 is a wasteful number, since it uses less digits than its factorization.

142212141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1757 (or 1653 counting only the distinct ones).

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

The square root of 142212141 is about 11925.2732044176. The cubic root of 142212141 is about 521.9700185361.

Adding to 142212141 its reverse (141212241), we get a palindrome (283424382).

The spelling of 142212141 in words is "one hundred forty-two million, two hundred twelve thousand, one hundred forty-one".