243345542 has 32 divisors (see below), whose sum is σ = 408893184. Its totient is φ = 107682400.

The previous prime is 243345539. The next prime is 243345551. The reversal of 243345542 is 245543342.

It is a super-2 number, since 2×243345542² = 118434105622547528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 243345499 and 243345508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128708 + ... + 130584.

It is an arithmetic number, because the mean of its divisors is an integer number (12777912).

Almost surely, 2^243345542 is an apocalyptic number.

243345542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

243345542 is a deficient number, since it is larger than the sum of its proper divisors (165547642).

243345542 is a wasteful number, since it uses less digits than its factorization.

243345542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2044.

The product of its digits is 57600, while the sum is 32.

The square root of 243345542 is about 15599.5365956813. The cubic root of 243345542 is about 624.3207913216.

Adding to 243345542 its reverse (245543342), we get a palindrome (488888884).

The spelling of 243345542 in words is "two hundred forty-three million, three hundred forty-five thousand, five hundred forty-two".