142781002 has 72 divisors (see below), whose sum is σ = 278257356. Its totient is φ = 54722304.

The previous prime is 142780933. The next prime is 142781021. The reversal of 142781002 is 200187241.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 28526281 + 114254721 = 5341^2 + 10689^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 612678 + ... + 612910.

Almost surely, 2^142781002 is an apocalyptic number.

142781002 is a deficient number, since it is larger than the sum of its proper divisors (135476354).

142781002 is a wasteful number, since it uses less digits than its factorization.

142781002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312 (or 292 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 142781002 is about 11949.1004682361. The cubic root of 142781002 is about 522.6650678452.

The spelling of 142781002 in words is "one hundred forty-two million, seven hundred eighty-one thousand, two".