142143225 has 24 divisors (see below), whose sum is σ = 268584000. Its totient is φ = 64979520.

The previous prime is 142143223. The next prime is 142143241. The reversal of 142143225 is 522341241.

It is not a de Polignac number, because 142143225 - 2¹ = 142143223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142143195 and 142143204.

It is not an unprimeable number, because it can be changed into a prime (142143223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 134850 + ... + 135899.

It is an arithmetic number, because the mean of its divisors is an integer number (11191000).

Almost surely, 2^142143225 is an apocalyptic number.

142143225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

142143225 is a deficient number, since it is larger than the sum of its proper divisors (126440775).

142143225 is a wasteful number, since it uses less digits than its factorization.

142143225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270769 (or 270764 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

The square root of 142143225 is about 11922.3833607211. The cubic root of 142143225 is about 521.8856893600.

Adding to 142143225 its reverse (522341241), we get a palindrome (664484466).

The spelling of 142143225 in words is "one hundred forty-two million, one hundred forty-three thousand, two hundred twenty-five".