201534421 has 8 divisors (see below), whose sum is σ = 224969184. Its totient is φ = 178951920.

The previous prime is 201534419. The next prime is 201534457. The reversal of 201534421 is 124435102.

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 201534421 - 2¹ = 201534419 is a prime.

It is a super-2 number, since 2×201534421² = 81232245695610482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201534392 and 201534401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201534401) 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, 212566 + ... + 213511.

It is an arithmetic number, because the mean of its divisors is an integer number (28121148).

Almost surely, 2^201534421 is an apocalyptic number.

It is an amenable number.

201534421 is a deficient number, since it is larger than the sum of its proper divisors (23434763).

201534421 is a wasteful number, since it uses less digits than its factorization.

201534421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426131.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 201534421 is about 14196.2819428187. The cubic root of 201534421 is about 586.2952972427.

Adding to 201534421 its reverse (124435102), we get a palindrome (325969523).

The spelling of 201534421 in words is "two hundred one million, five hundred thirty-four thousand, four hundred twenty-one".