149236281 has 12 divisors (see below), whose sum is σ = 221390052. Its totient is φ = 96801696.

The previous prime is 149236277. The next prime is 149236289. The reversal of 149236281 is 182632941.

149236281 is a `hidden beast` number, since 1 + 4 + 9 + 23 + 628 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 134096400 + 15139881 = 11580^2 + 3891^2 .

It is not a de Polignac number, because 149236281 - 2² = 149236277 is a prime.

It is a super-2 number, since 2×149236281² = 44542935133421922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (149236289) 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 11 ways as a sum of consecutive naturals, for example, 223746 + ... + 224411.

It is an arithmetic number, because the mean of its divisors is an integer number (18449171).

Almost surely, 2^149236281 is an apocalyptic number.

It is an amenable number.

149236281 is a deficient number, since it is larger than the sum of its proper divisors (72153771).

149236281 is a wasteful number, since it uses less digits than its factorization.

149236281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448200 (or 448197 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 149236281 is about 12216.2302286753. The cubic root of 149236281 is about 530.4260025779.

It can be divided in two parts, 1492 and 36281, that added together give a palindrome (37773).

The spelling of 149236281 in words is "one hundred forty-nine million, two hundred thirty-six thousand, two hundred eighty-one".