1225442143142 has 8 divisors (see below), whose sum is σ = 2100757959696. Its totient is φ = 525189489912.

The previous prime is 1225442143001. The next prime is 1225442143181. The reversal of 1225442143142 is 2413412445221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43765790813 + ... + 43765790840.

It is an arithmetic number, because the mean of its divisors is an integer number (262594744962).

Almost surely, 2^{1225442143142} is an apocalyptic number.

1225442143142 is a deficient number, since it is larger than the sum of its proper divisors (875315816554).

1225442143142 is an equidigital number, since it uses as much as digits as its factorization.

1225442143142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87531581662.

The product of its digits is 61440, while the sum is 35.

Adding to 1225442143142 its reverse (2413412445221), we get a palindrome (3638854588363).

The spelling of 1225442143142 in words is "one trillion, two hundred twenty-five billion, four hundred forty-two million, one hundred forty-three thousand, one hundred forty-two".