243949342 has 48 divisors (see below), whose sum is σ = 460509840. Its totient is φ = 96066432.

The previous prime is 243949319. The next prime is 243949361.

It is a happy number.

243949342 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×243949342² = 119022562924465928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243949295 and 243949304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 533578 + ... + 534034.

It is an arithmetic number, because the mean of its divisors is an integer number (9593955).

Almost surely, 2^243949342 is an apocalyptic number.

243949342 is a deficient number, since it is larger than the sum of its proper divisors (216560498).

243949342 is a wasteful number, since it uses less digits than its factorization.

243949342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 898 counting only the distinct ones).

The product of its digits is 186624, while the sum is 40.

The square root of 243949342 is about 15618.8777445756. The cubic root of 243949342 is about 624.8367291919.

The spelling of 243949342 in words is "two hundred forty-three million, nine hundred forty-nine thousand, three hundred forty-two".