234557423021 has 8 divisors (see below), whose sum is σ = 244799049984. Its totient is φ = 224319419280.

The previous prime is 234557422951. The next prime is 234557423039. The reversal of 234557423021 is 120324755432.

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 234557423021 - 2¹⁰ = 234557421997 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 (234557423521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 773090 + ... + 1032851.

It is an arithmetic number, because the mean of its divisors is an integer number (30599881248).

Almost surely, 2^234557423021 is an apocalyptic number.

It is an amenable number.

234557423021 is a deficient number, since it is larger than the sum of its proper divisors (10241626963).

234557423021 is a wasteful number, since it uses less digits than its factorization.

234557423021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811611.

The product of its (nonzero) digits is 201600, while the sum is 38.

The spelling of 234557423021 in words is "two hundred thirty-four billion, five hundred fifty-seven million, four hundred twenty-three thousand, twenty-one".