202103406 has 12 divisors (see below), whose sum is σ = 437890752. Its totient is φ = 67367796.

The previous prime is 202103401. The next prime is 202103441. The reversal of 202103406 is 604301202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 11227967 = 202103406 / (2 + 0 + 2 + 1 + 0 + 3 + 4 + 0 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202103401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5613966 + ... + 5614001.

It is an arithmetic number, because the mean of its divisors is an integer number (36490896).

Almost surely, 2^202103406 is an apocalyptic number.

202103406 is an abundant number, since it is smaller than the sum of its proper divisors (235787346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202103406 is a wasteful number, since it uses less digits than its factorization.

202103406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11227975 (or 11227972 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 202103406 is about 14216.3077484978. The cubic root of 202103406 is about 586.8465343943.

Adding to 202103406 its reverse (604301202), we get a palindrome (806404608).

The spelling of 202103406 in words is "two hundred two million, one hundred three thousand, four hundred six".