142781958224 has 40 divisors (see below), whose sum is σ = 279376705800. Its totient is φ = 70687774208.

The previous prime is 142781958211. The next prime is 142781958227. The reversal of 142781958224 is 422859187241.

It is a happy number.

It is a Cunningham number, because it is equal to 377865²-1.

It can be written as a sum of positive squares in 4 ways, for example, as 6006250000 + 136775708224 = 77500^2 + 369832^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142781958227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 661262 + ... + 850194.

It is an arithmetic number, because the mean of its divisors is an integer number (6984417645).

Almost surely, 2^142781958224 is an apocalyptic number.

It is an amenable number.

142781958224 is a deficient number, since it is larger than the sum of its proper divisors (136594747576).

142781958224 is a wasteful number, since it uses less digits than its factorization.

142781958224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189407 (or 189401 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 53.

The spelling of 142781958224 in words is "one hundred forty-two billion, seven hundred eighty-one million, nine hundred fifty-eight thousand, two hundred twenty-four".