242153454321 has 24 divisors (see below), whose sum is σ = 354282032000. Its totient is φ = 159357380832.

The previous prime is 242153454313. The next prime is 242153454337. The reversal of 242153454321 is 123454351242.

It is a happy number.

242153454321 is a `hidden beast` number, since 2 + 4 + 215 + 3 + 4 + 5 + 432 + 1 = 666.

It is not a de Polignac number, because 242153454321 - 2³ = 242153454313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (242153454341) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3455610 + ... + 3524988.

Almost surely, 2^242153454321 is an apocalyptic number.

It is an amenable number.

242153454321 is a deficient number, since it is larger than the sum of its proper divisors (112128577679).

242153454321 is a wasteful number, since it uses less digits than its factorization.

242153454321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74373 (or 74370 counting only the distinct ones).

The product of its digits is 115200, while the sum is 36.

The spelling of 242153454321 in words is "two hundred forty-two billion, one hundred fifty-three million, four hundred fifty-four thousand, three hundred twenty-one".