35243142534221 has 4 divisors (see below), whose sum is σ = 35555028751452. Its totient is φ = 34931256316992.

The previous prime is 35243142534209. The next prime is 35243142534289. The reversal of 35243142534221 is 12243524134253.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4669873458121 + 30573269076100 = 2160989^2 + 5529310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-35243142534221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35243142504221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155943108446 + ... + 155943108671.

It is an arithmetic number, because the mean of its divisors is an integer number (8888757187863).

Almost surely, 2^{35243142534221} is an apocalyptic number.

It is an amenable number.

35243142534221 is a deficient number, since it is larger than the sum of its proper divisors (311886217231).

35243142534221 is a wasteful number, since it uses less digits than its factorization.

35243142534221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311886217230.

The product of its digits is 691200, while the sum is 41.

Adding to 35243142534221 its reverse (12243524134253), we get a palindrome (47486666668474).

The spelling of 35243142534221 in words is "thirty-five trillion, two hundred forty-three billion, one hundred forty-two million, five hundred thirty-four thousand, two hundred twenty-one".