142030144 has 14 divisors (see below), whose sum is σ = 281841194. Its totient is φ = 71015040.

The previous prime is 142029977. The next prime is 142030153. The reversal of 142030144 is 441030241.

It can be written as a sum of positive squares in only one way, i.e., 141324544 + 705600 = 11888^2 + 840^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109547 + ... + 1109674.

Almost surely, 2^142030144 is an apocalyptic number.

It is an amenable number.

142030144 is a deficient number, since it is larger than the sum of its proper divisors (139811050).

142030144 is an equidigital number, since it uses as much as digits as its factorization.

142030144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2219233 (or 2219223 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 142030144 is about 11917.6400348391. The cubic root of 142030144 is about 521.7472585336.

Adding to 142030144 its reverse (441030241), we get a palindrome (583060385).

The spelling of 142030144 in words is "one hundred forty-two million, thirty thousand, one hundred forty-four".