142745784 has 64 divisors (see below), whose sum is σ = 381024000. Its totient is φ = 44432640.

The previous prime is 142745777. The next prime is 142745789. The reversal of 142745784 is 487547241.

142745784 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142745789) 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, 30172 + ... + 34580.

It is an arithmetic number, because the mean of its divisors is an integer number (5953500).

Almost surely, 2^142745784 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142745784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190512000).

142745784 is an abundant number, since it is smaller than the sum of its proper divisors (238278216).

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

142745784 is a wasteful number, since it uses less digits than its factorization.

142745784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4508 (or 4504 counting only the distinct ones).

The product of its digits is 250880, while the sum is 42.

The square root of 142745784 is about 11947.6267099370. The cubic root of 142745784 is about 522.6220912312.

The spelling of 142745784 in words is "one hundred forty-two million, seven hundred forty-five thousand, seven hundred eighty-four".