242621843447 has 8 divisors (see below), whose sum is σ = 244041614640. Its totient is φ = 241202787520.

The previous prime is 242621843413. The next prime is 242621843459. The reversal of 242621843447 is 744348126242.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 242621843447 - 2³⁰ = 241548101623 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 (242621443447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509297 + ... + 862917.

It is an arithmetic number, because the mean of its divisors is an integer number (30505201830).

Almost surely, 2^242621843447 is an apocalyptic number.

242621843447 is a deficient number, since it is larger than the sum of its proper divisors (1419771193).

242621843447 is a wasteful number, since it uses less digits than its factorization.

242621843447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357633.

The product of its digits is 2064384, while the sum is 47.

Adding to 242621843447 its reverse (744348126242), we get a palindrome (986969969689).

The spelling of 242621843447 in words is "two hundred forty-two billion, six hundred twenty-one million, eight hundred forty-three thousand, four hundred forty-seven".