201041421 has 16 divisors (see below), whose sum is σ = 311372928. Its totient is φ = 112996800.

The previous prime is 201041389. The next prime is 201041431. The reversal of 201041421 is 124140102.

It is not a de Polignac number, because 201041421 - 2⁵ = 201041389 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 201041421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201041431) 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 15 ways as a sum of consecutive naturals, for example, 77190 + ... + 79751.

It is an arithmetic number, because the mean of its divisors is an integer number (19460808).

Almost surely, 2^201041421 is an apocalyptic number.

201041421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201041421 is a deficient number, since it is larger than the sum of its proper divisors (110331507).

201041421 is a wasteful number, since it uses less digits than its factorization.

201041421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157012.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 201041421 is about 14178.9076095445. The cubic root of 201041421 is about 585.8168353995.

Adding to 201041421 its reverse (124140102), we get a palindrome (325181523).

The spelling of 201041421 in words is "two hundred one million, forty-one thousand, four hundred twenty-one".