202969421 has 4 divisors (see below), whose sum is σ = 203191200. Its totient is φ = 202747644.

The previous prime is 202969399. The next prime is 202969423. The reversal of 202969421 is 124969202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202969421 - 2²² = 198775117 is a prime.

It is a super-2 number, since 2×202969421² = 82393171722150482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202969423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109511 + ... + 111348.

It is an arithmetic number, because the mean of its divisors is an integer number (50797800).

Almost surely, 2^202969421 is an apocalyptic number.

It is an amenable number.

202969421 is a deficient number, since it is larger than the sum of its proper divisors (221779).

202969421 is an equidigital number, since it uses as much as digits as its factorization.

202969421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221778.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 202969421 is about 14246.7336958336. The cubic root of 202969421 is about 587.6835542950.

The spelling of 202969421 in words is "two hundred two million, nine hundred sixty-nine thousand, four hundred twenty-one".