202042987 has 4 divisors (see below), whose sum is σ = 202197256. Its totient is φ = 201888720.

The previous prime is 202042937. The next prime is 202042993. The reversal of 202042987 is 789240202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 202042987 - 2¹¹ = 202040939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202042927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75153 + ... + 77794.

It is an arithmetic number, because the mean of its divisors is an integer number (50549314).

Almost surely, 2^202042987 is an apocalyptic number.

202042987 is a deficient number, since it is larger than the sum of its proper divisors (154269).

202042987 is a wasteful number, since it uses less digits than its factorization.

202042987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154268.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 202042987 is about 14214.1826004874. The cubic root of 202042987 is about 586.7880491279.

The spelling of 202042987 in words is "two hundred two million, forty-two thousand, nine hundred eighty-seven".