243927142 has 4 divisors (see below), whose sum is σ = 365890716. Its totient is φ = 121963570.

The previous prime is 243927139. The next prime is 243927143. The reversal of 243927142 is 241729342.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 243927098 and 243927107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243927143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60981784 + ... + 60981787.

It is an arithmetic number, because the mean of its divisors is an integer number (91472679).

Almost surely, 2^243927142 is an apocalyptic number.

243927142 is a deficient number, since it is larger than the sum of its proper divisors (121963574).

243927142 is a wasteful number, since it uses less digits than its factorization.

243927142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121963573.

The product of its digits is 24192, while the sum is 34.

The square root of 243927142 is about 15618.1670499454. The cubic root of 243927142 is about 624.8177747155.

The spelling of 243927142 in words is "two hundred forty-three million, nine hundred twenty-seven thousand, one hundred forty-two".