200421537 has 8 divisors (see below), whose sum is σ = 267421440. Its totient is φ = 133518000.

The previous prime is 200421521. The next prime is 200421553. The reversal of 200421537 is 735124002.

It is an interprime number because it is at equal distance from previous prime (200421521) and next prime (200421553).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 200421537 - 2⁴ = 200421521 is a prime.

It is not an unprimeable number, because it can be changed into a prime (200421577) 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 7 ways as a sum of consecutive naturals, for example, 19089 + ... + 27662.

It is an arithmetic number, because the mean of its divisors is an integer number (33427680).

Almost surely, 2^200421537 is an apocalyptic number.

It is an amenable number.

200421537 is a deficient number, since it is larger than the sum of its proper divisors (66999903).

200421537 is a wasteful number, since it uses less digits than its factorization.

200421537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48183.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 200421537 is about 14157.0313625421. The cubic root of 200421537 is about 585.2141198803.

Adding to 200421537 its reverse (735124002), we get a palindrome (935545539).

The spelling of 200421537 in words is "two hundred million, four hundred twenty-one thousand, five hundred thirty-seven".