235220421 has 8 divisors (see below), whose sum is σ = 324442080. Its totient is φ = 151406192.

The previous prime is 235220411. The next prime is 235220429. The reversal of 235220421 is 124022532.

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 235220421 - 2⁵ = 235220389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235220429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1351755 + ... + 1351928.

It is an arithmetic number, because the mean of its divisors is an integer number (40555260).

Almost surely, 2^235220421 is an apocalyptic number.

It is an amenable number.

235220421 is a deficient number, since it is larger than the sum of its proper divisors (89221659).

235220421 is a wasteful number, since it uses less digits than its factorization.

235220421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2703715.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 235220421 is about 15336.8973720241. The cubic root of 235220421 is about 617.2934578892.

Adding to 235220421 its reverse (124022532), we get a palindrome (359242953).

It can be divided in two parts, 235220 and 421, that added together give a triangular number (235641 = T₆₈₆).

The spelling of 235220421 in words is "two hundred thirty-five million, two hundred twenty thousand, four hundred twenty-one".