228542141 has 4 divisors (see below), whose sum is σ = 228829692. Its totient is φ = 228254592.

The previous prime is 228542129. The next prime is 228542183. The reversal of 228542141 is 141245822.

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 45616516 + 182925625 = 6754^2 + 13525^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228542141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222542141) 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, 142580 + ... + 144173.

It is an arithmetic number, because the mean of its divisors is an integer number (57207423).

Almost surely, 2^228542141 is an apocalyptic number.

It is an amenable number.

228542141 is a deficient number, since it is larger than the sum of its proper divisors (287551).

228542141 is an equidigital number, since it uses as much as digits as its factorization.

228542141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287550.

The product of its digits is 5120, while the sum is 29.

The square root of 228542141 is about 15117.6102939585. The cubic root of 228542141 is about 611.3953019047.

Adding to 228542141 its reverse (141245822), we get a palindrome (369787963).

The spelling of 228542141 in words is "two hundred twenty-eight million, five hundred forty-two thousand, one hundred forty-one".