242133489551 has 4 divisors (see below), whose sum is σ = 242135277552. Its totient is φ = 242131701552.

The previous prime is 242133489539. The next prime is 242133489557. The reversal of 242133489551 is 155984331242.

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

It is a cyclic number.

It is not a de Polignac number, because 242133489551 - 2¹⁸ = 242133227407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 242133489496 and 242133489505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242133489557) 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, 672590 + ... + 967803.

It is an arithmetic number, because the mean of its divisors is an integer number (60533819388).

Almost surely, 2^242133489551 is an apocalyptic number.

242133489551 is a deficient number, since it is larger than the sum of its proper divisors (1788001).

242133489551 is a wasteful number, since it uses less digits than its factorization.

242133489551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1788000.

The product of its digits is 1036800, while the sum is 47.

The spelling of 242133489551 in words is "two hundred forty-two billion, one hundred thirty-three million, four hundred eighty-nine thousand, five hundred fifty-one".