202141939 has 4 divisors (see below), whose sum is σ = 204031224. Its totient is φ = 200252656.

The previous prime is 202141937. The next prime is 202141943. The reversal of 202141939 is 939141202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 939141202 = 2 ⋅469570601.

It is a cyclic number.

It is not a de Polignac number, because 202141939 - 2¹ = 202141937 is a prime.

It is a super-2 number, since 2×202141939² = 81722727005359442, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 202141939.

It is not an unprimeable number, because it can be changed into a prime (202141937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944482 + ... + 944695.

It is an arithmetic number, because the mean of its divisors is an integer number (51007806).

Almost surely, 2^202141939 is an apocalyptic number.

202141939 is a deficient number, since it is larger than the sum of its proper divisors (1889285).

202141939 is a wasteful number, since it uses less digits than its factorization.

202141939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889284.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 202141939 is about 14217.6629232796. The cubic root of 202141939 is about 586.8838280434.

The spelling of 202141939 in words is "two hundred two million, one hundred forty-one thousand, nine hundred thirty-nine".