201420881 has 4 divisors (see below), whose sum is σ = 212022000. Its totient is φ = 190819764.

The previous prime is 201420839. The next prime is 201420883. The reversal of 201420881 is 188024102.

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 201420881 - 2¹⁰ = 201419857 is a prime.

It is a super-2 number, since 2×201420881² = 81140742605632322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201420881.

It is not an unprimeable number, because it can be changed into a prime (201420883) 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, 5300531 + ... + 5300568.

It is an arithmetic number, because the mean of its divisors is an integer number (53005500).

Almost surely, 2^201420881 is an apocalyptic number.

It is an amenable number.

201420881 is a deficient number, since it is larger than the sum of its proper divisors (10601119).

201420881 is a wasteful number, since it uses less digits than its factorization.

201420881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10601118.

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 201420881 is about 14192.2824450474. The cubic root of 201420881 is about 586.1851746598.

Adding to 201420881 its reverse (188024102), we get a palindrome (389444983).

The spelling of 201420881 in words is "two hundred one million, four hundred twenty thousand, eight hundred eighty-one".