142445513540 has 96 divisors (see below), whose sum is σ = 338438822400. Its totient is φ = 49885355520.

The previous prime is 142445513503. The next prime is 142445513557. The reversal of 142445513540 is 45315544241.

It is a junction number, because it is equal to n+sod(n) for n = 142445513494 and 142445513503.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2504741 + ... + 2560979.

It is an arithmetic number, because the mean of its divisors is an integer number (3525404400).

Almost surely, 2^142445513540 is an apocalyptic number.

142445513540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142445513540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169219411200).

142445513540 is an abundant number, since it is smaller than the sum of its proper divisors (195993308860).

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

142445513540 is a wasteful number, since it uses less digits than its factorization.

142445513540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56685 (or 56683 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 38.

The spelling of 142445513540 in words is "one hundred forty-two billion, four hundred forty-five million, five hundred thirteen thousand, five hundred forty".