133789842 has 12 divisors (see below), whose sum is σ = 289878030. Its totient is φ = 44596608.

The previous prime is 133789829. The next prime is 133789867. The reversal of 133789842 is 248987331.

It can be written as a sum of positive squares in only one way, i.e., 86881041 + 46908801 = 9321^2 + 6849^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3716367 + ... + 3716402.

Almost surely, 2^133789842 is an apocalyptic number.

133789842 is an abundant number, since it is smaller than the sum of its proper divisors (156088188).

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

133789842 is a wasteful number, since it uses less digits than its factorization.

133789842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7432777 (or 7432774 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 133789842 is about 11566.7558978306. The cubic root of 133789842 is about 511.4553356080.

It can be divided in two parts, 13378 and 9842, that added together give a triangular number (23220 = T₂₁₅).

The spelling of 133789842 in words is "one hundred thirty-three million, seven hundred eighty-nine thousand, eight hundred forty-two".