147841281 has 45 divisors (see below), whose sum is σ = 258244371. Its totient is φ = 84043008.

The previous prime is 147841237. The next prime is 147841283. The reversal of 147841281 is 182148741.

The square root of 147841281 is 12159.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 35820225 + 112021056 = 5985^2 + 10584^2 .

It is a de Polignac number, because none of the positive numbers 2^k-147841281 is a prime.

It is a super-2 number, since 2×147841281² = 43714088735441922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (147841283) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 765921 + ... + 766113.

Almost surely, 2^147841281 is an apocalyptic number.

147841281 is the 12159-th square number.

147841281 is the 6080-th centered octagonal number.

It is an amenable number.

147841281 is a deficient number, since it is larger than the sum of its proper divisors (110403090).

147841281 is an frugal number, since it uses more digits than its factorization.

147841281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 203 counting only the distinct ones).

The product of its digits is 14336, while the sum is 36.

The cubic root of 147841281 is about 528.7680905233.

Multiplying 147841281 by its sum of digits (36), we get a square (5322286116 = 72954²).

The spelling of 147841281 in words is "one hundred forty-seven million, eight hundred forty-one thousand, two hundred eighty-one".