142445227731 has 16 divisors (see below), whose sum is σ = 211683312000. Its totient is φ = 84673323648.

The previous prime is 142445227679. The next prime is 142445227739. The reversal of 142445227731 is 137722544241.

142445227731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 142445227731 - 2⁶ = 142445227667 is a prime.

It is a super-2 number, since 2×142445227731² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142445227739) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 73500181 + ... + 73502118.

It is an arithmetic number, because the mean of its divisors is an integer number (13230207000).

Almost surely, 2^142445227731 is an apocalyptic number.

142445227731 is a deficient number, since it is larger than the sum of its proper divisors (69238084269).

142445227731 is a wasteful number, since it uses less digits than its factorization.

142445227731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147002338.

The product of its digits is 376320, while the sum is 42.

The spelling of 142445227731 in words is "one hundred forty-two billion, four hundred forty-five million, two hundred twenty-seven thousand, seven hundred thirty-one".