142021513344 has 32 divisors (see below), whose sum is σ = 377244645840. Its totient is φ = 47340504320.

The previous prime is 142021513343. The next prime is 142021513357. The reversal of 142021513344 is 443315120241.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×142021513344² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (142021513343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184923462 + ... + 184924229.

Almost surely, 2^142021513344 is an apocalyptic number.

It is an amenable number.

142021513344 is an abundant number, since it is smaller than the sum of its proper divisors (235223132496).

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

142021513344 is an equidigital number, since it uses as much as digits as its factorization.

142021513344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369847708 (or 369847696 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 142021513344 its reverse (443315120241), we get a palindrome (585336633585).

The spelling of 142021513344 in words is "one hundred forty-two billion, twenty-one million, five hundred thirteen thousand, three hundred forty-four".