234742682821 has 8 divisors (see below), whose sum is σ = 242025171480. Its totient is φ = 227509567488.

The previous prime is 234742682809. The next prime is 234742682827. The reversal of 234742682821 is 128286247432.

It can be written as a sum of positive squares in 4 ways, for example, as 147466752196 + 87275930625 = 384014^2 + 295425^2 .

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 234742682821 - 2¹⁵ = 234742650053 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 (234742682827) 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, 12333676 + ... + 12352693.

It is an arithmetic number, because the mean of its divisors is an integer number (30253146435).

Almost surely, 2^234742682821 is an apocalyptic number.

It is an amenable number.

234742682821 is a deficient number, since it is larger than the sum of its proper divisors (7282488659).

234742682821 is a wasteful number, since it uses less digits than its factorization.

234742682821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24686663.

The product of its digits is 2064384, while the sum is 49.

The spelling of 234742682821 in words is "two hundred thirty-four billion, seven hundred forty-two million, six hundred eighty-two thousand, eight hundred twenty-one".