142778608 has 80 divisors (see below), whose sum is σ = 327836160. Its totient is φ = 58975488.

The previous prime is 142778599. The next prime is 142778611. The reversal of 142778608 is 806877241.

It is a super-3 number, since 3×142778608³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397533 + ... + 397891.

It is an arithmetic number, because the mean of its divisors is an integer number (4097952).

Almost surely, 2^142778608 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 142778608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163918080).

142778608 is an abundant number, since it is smaller than the sum of its proper divisors (185057552).

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

142778608 is a wasteful number, since it uses less digits than its factorization.

142778608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 43.

The square root of 142778608 is about 11949.0002929115. Note that the first 3 decimals coincide. The cubic root of 142778608 is about 522.6621466648.

The spelling of 142778608 in words is "one hundred forty-two million, seven hundred seventy-eight thousand, six hundred eight".