202106541 has 32 divisors (see below), whose sum is σ = 336365568. Its totient is φ = 105094080.

The previous prime is 202106521. The next prime is 202106609. The reversal of 202106541 is 145601202.

It is not a de Polignac number, because 202106541 - 2¹⁰ = 202105517 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202106501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14170 + ... + 24596.

It is an arithmetic number, because the mean of its divisors is an integer number (10511424).

Almost surely, 2^202106541 is an apocalyptic number.

202106541 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

202106541 is a deficient number, since it is larger than the sum of its proper divisors (134259027).

202106541 is a wasteful number, since it uses less digits than its factorization.

202106541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10521.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 202106541 is about 14216.4180087672. The cubic root of 202106541 is about 586.8495687392.

Adding to 202106541 its reverse (145601202), we get a palindrome (347707743).

The spelling of 202106541 in words is "two hundred two million, one hundred six thousand, five hundred forty-one".