202740249 has 16 divisors (see below), whose sum is σ = 287297280. Its totient is φ = 126731520.

The previous prime is 202740221. The next prime is 202740259. The reversal of 202740249 is 942047202.

It is not a de Polignac number, because 202740249 - 2⁸ = 202739993 is a prime.

It is a super-2 number, since 2×202740249² = 82207217129164002, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (202740259) 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 15 ways as a sum of consecutive naturals, for example, 6487 + ... + 21155.

It is an arithmetic number, because the mean of its divisors is an integer number (17956080).

Almost surely, 2^202740249 is an apocalyptic number.

It is an amenable number.

202740249 is a deficient number, since it is larger than the sum of its proper divisors (84557031).

202740249 is a wasteful number, since it uses less digits than its factorization.

202740249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14960.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 202740249 is about 14238.6884578602. The cubic root of 202740249 is about 587.4622872427.

The spelling of 202740249 in words is "two hundred two million, seven hundred forty thousand, two hundred forty-nine".