142421421553252 has 12 divisors (see below), whose sum is σ = 249392005700796. Its totient is φ = 71166562781600.

The previous prime is 142421421553231. The next prime is 142421421553253. The reversal of 142421421553252 is 252355124124241.

It can be written as a sum of positive squares in 2 ways, for example, as 39482824663296 + 102938596889956 = 6283536^2 + 10145866^2 .

It is a super-2 number, since 2×142421421553252² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 142421421553199 and 142421421553208.

It is not an unprimeable number, because it can be changed into a prime (142421421553253) 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 3 ways as a sum of consecutive naturals, for example, 11036991499 + ... + 11037004402.

It is an arithmetic number, because the mean of its divisors is an integer number (20782667141733).

Almost surely, 2^{142421421553252} is an apocalyptic number.

It is an amenable number.

142421421553252 is a deficient number, since it is larger than the sum of its proper divisors (106970584147544).

142421421553252 is a wasteful number, since it uses less digits than its factorization.

142421421553252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22073997518 (or 22073997516 counting only the distinct ones).

The product of its digits is 768000, while the sum is 43.

Adding to 142421421553252 its reverse (252355124124241), we get a palindrome (394776545677493).

The spelling of 142421421553252 in words is "one hundred forty-two trillion, four hundred twenty-one billion, four hundred twenty-one million, five hundred fifty-three thousand, two hundred fifty-two".