243400121034 has 64 divisors (see below), whose sum is σ = 611086325760. Its totient is φ = 63018267840.

The previous prime is 243400120967. The next prime is 243400121039. The reversal of 243400121034 is 430121004342.

It is a junction number, because it is equal to n+sod(n) for n = 243400120995 and 243400121013.

It is not an unprimeable number, because it can be changed into a prime (243400121039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6612357 + ... + 6649064.

It is an arithmetic number, because the mean of its divisors is an integer number (9548223840).

Almost surely, 2^243400121034 is an apocalyptic number.

243400121034 is an abundant number, since it is smaller than the sum of its proper divisors (367686204726).

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

243400121034 is a wasteful number, since it uses less digits than its factorization.

243400121034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13261475.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 243400121034 its reverse (430121004342), we get a palindrome (673521125376).

The spelling of 243400121034 in words is "two hundred forty-three billion, four hundred million, one hundred twenty-one thousand, thirty-four".