142645021436 has 12 divisors (see below), whose sum is σ = 249631434360. Its totient is φ = 71321754480.

The previous prime is 142645021429. The next prime is 142645021481. The reversal of 142645021436 is 634120546241.

142645021436 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 142645021436.

It is a congruent number.

It is an unprimeable number.

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, 620855 + ... + 818993.

It is an arithmetic number, because the mean of its divisors is an integer number (20802619530).

Almost surely, 2^142645021436 is an apocalyptic number.

It is an amenable number.

142645021436 is a deficient number, since it is larger than the sum of its proper divisors (106986412924).

142645021436 is a wasteful number, since it uses less digits than its factorization.

142645021436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378124 (or 378122 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

Adding to 142645021436 its reverse (634120546241), we get a palindrome (776765567677).

The spelling of 142645021436 in words is "one hundred forty-two billion, six hundred forty-five million, twenty-one thousand, four hundred thirty-six".