503142221040 has 80 divisors (see below), whose sum is σ = 1613525076000. Its totient is φ = 129544662016.

The previous prime is 503142221017. The next prime is 503142221047. The reversal of 503142221040 is 40122241305.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 503142221040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503142221047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36138315 + ... + 36152234.

It is an arithmetic number, because the mean of its divisors is an integer number (20169063450).

Almost surely, 2^503142221040 is an apocalyptic number.

It is an amenable number.

503142221040 is an abundant number, since it is smaller than the sum of its proper divisors (1110382854960).

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

503142221040 is a wasteful number, since it uses less digits than its factorization.

503142221040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72290594 (or 72290588 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 503142221040 its reverse (40122241305), we get a palindrome (543264462345).

The spelling of 503142221040 in words is "five hundred three billion, one hundred forty-two million, two hundred twenty-one thousand, forty".