609742143 has 24 divisors (see below), whose sum is σ = 895679408. Its totient is φ = 399624192.

The previous prime is 609742117. The next prime is 609742183. The reversal of 609742143 is 341247906.

609742143 is a `hidden beast` number, since 609 + 7 + 4 + 2 + 1 + 43 = 666.

It is not a de Polignac number, because 609742143 - 2⁶ = 609742079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 609742098 and 609742107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609742183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 528255 + ... + 529407.

Almost surely, 2^609742143 is an apocalyptic number.

609742143 is a deficient number, since it is larger than the sum of its proper divisors (285937265).

609742143 is a wasteful number, since it uses less digits than its factorization.

609742143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2103 (or 2100 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 609742143 is about 24692.9573562990. The cubic root of 609742143 is about 847.9730911236.

The spelling of 609742143 in words is "six hundred nine million, seven hundred forty-two thousand, one hundred forty-three".