242532833621 has 4 divisors (see below), whose sum is σ = 261189205452. Its totient is φ = 223876461792.

The previous prime is 242532833603. The next prime is 242532833633. The reversal of 242532833621 is 126338235242.

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 64122900625 + 178409932996 = 253225^2 + 422386^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-242532833621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242532833681) 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, 9328185896 + ... + 9328185921.

It is an arithmetic number, because the mean of its divisors is an integer number (65297301363).

Almost surely, 2^242532833621 is an apocalyptic number.

It is an amenable number.

242532833621 is a deficient number, since it is larger than the sum of its proper divisors (18656371831).

242532833621 is a wasteful number, since it uses less digits than its factorization.

242532833621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18656371830.

The product of its digits is 414720, while the sum is 41.

The spelling of 242532833621 in words is "two hundred forty-two billion, five hundred thirty-two million, eight hundred thirty-three thousand, six hundred twenty-one".