142323521236520 has 64 divisors (see below), whose sum is σ = 344882225777040. Its totient is φ = 52546964428800.

The previous prime is 142323521236499. The next prime is 142323521236607. The reversal of 142323521236520 is 25632125323241.

It can be written as a sum of positive squares in 8 ways, for example, as 33554515975876 + 108769005260644 = 5792626^2 + 10429238^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85061 + ... + 16871700.

Almost surely, 2^{142323521236520} is an apocalyptic number.

142323521236520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142323521236520 is an abundant number, since it is smaller than the sum of its proper divisors (202558704540520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142323521236520 is a wasteful number, since it uses less digits than its factorization.

142323521236520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16972926 (or 16972922 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 41.

Adding to 142323521236520 its reverse (25632125323241), we get a palindrome (167955646559761).

The spelling of 142323521236520 in words is "one hundred forty-two trillion, three hundred twenty-three billion, five hundred twenty-one million, two hundred thirty-six thousand, five hundred twenty".