202105144 has 8 divisors (see below), whose sum is σ = 378947160. Its totient is φ = 101052568.

The previous prime is 202105093. The next prime is 202105159. The reversal of 202105144 is 441501202.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12631564 + ... + 12631579.

It is an arithmetic number, because the mean of its divisors is an integer number (47368395).

Almost surely, 2^202105144 is an apocalyptic number.

It is an amenable number.

202105144 is a deficient number, since it is larger than the sum of its proper divisors (176842016).

202105144 is a wasteful number, since it uses less digits than its factorization.

202105144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25263149 (or 25263145 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 202105144 is about 14216.3688753493. The cubic root of 202105144 is about 586.8482165964.

Adding to 202105144 its reverse (441501202), we get a palindrome (643606346).

The spelling of 202105144 in words is "two hundred two million, one hundred five thousand, one hundred forty-four".