42201289 has 4 divisors (see below), whose sum is σ = 45447556. Its totient is φ = 38955024.

The previous prime is 42201287. The next prime is 42201307. The reversal of 42201289 is 98210224.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5198400 + 37002889 = 2280^2 + 6083^2 .

It is a cyclic number.

It is not a de Polignac number, because 42201289 - 2¹ = 42201287 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42201281) 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, 1623114 + ... + 1623139.

It is an arithmetic number, because the mean of its divisors is an integer number (11361889).

Almost surely, 2^42201289 is an apocalyptic number.

It is an amenable number.

42201289 is a deficient number, since it is larger than the sum of its proper divisors (3246267).

42201289 is a wasteful number, since it uses less digits than its factorization.

42201289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246266.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 42201289 is about 6496.2519193763. The cubic root of 42201289 is about 348.1570860152.

The spelling of 42201289 in words is "forty-two million, two hundred one thousand, two hundred eighty-nine".