243201405342 has 64 divisors (see below), whose sum is σ = 570073135104. Its totient is φ = 67725365760.

The previous prime is 243201405331. The next prime is 243201405431. The reversal of 243201405342 is 243504102342.

It is a super-2 number, since 2×243201405342² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 220128 + ... + 731340.

It is an arithmetic number, because the mean of its divisors is an integer number (8907392736).

Almost surely, 2^243201405342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243201405342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285036567552).

243201405342 is an abundant number, since it is smaller than the sum of its proper divisors (326871729762).

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

243201405342 is a wasteful number, since it uses less digits than its factorization.

243201405342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511513.

The product of its (nonzero) digits is 23040, while the sum is 30.

Adding to 243201405342 its reverse (243504102342), we get a palindrome (486705507684).

The spelling of 243201405342 in words is "two hundred forty-three billion, two hundred one million, four hundred five thousand, three hundred forty-two".