234210021 has 8 divisors (see below), whose sum is σ = 318172320. Its totient is φ = 153193872.

The previous prime is 234210013. The next prime is 234210023. The reversal of 234210021 is 120012432.

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

It is not a de Polignac number, because 234210021 - 2³ = 234210013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (234210023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 736351 + ... + 736668.

It is an arithmetic number, because the mean of its divisors is an integer number (39771540).

Almost surely, 2^234210021 is an apocalyptic number.

It is an amenable number.

234210021 is a deficient number, since it is larger than the sum of its proper divisors (83962299).

234210021 is a wasteful number, since it uses less digits than its factorization.

234210021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473075.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 234210021 is about 15303.9217522830. The cubic root of 234210021 is about 616.4083185981.

Adding to 234210021 its reverse (120012432), we get a palindrome (354222453).

The spelling of 234210021 in words is "two hundred thirty-four million, two hundred ten thousand, twenty-one".