149006281 has 4 divisors (see below), whose sum is σ = 149079700. Its totient is φ = 148932864.

The previous prime is 149006261. The next prime is 149006317. The reversal of 149006281 is 182600941.

It is a happy number.

149006281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 182600941 = 2287 ⋅79843.

It can be written as a sum of positive squares in 2 ways, for example, as 57517056 + 91489225 = 7584^2 + 9565^2 .

It is a cyclic number.

It is not a de Polignac number, because 149006281 - 2⁷ = 149006153 is a prime.

It is a super-2 number, since 2×149006281² = 44405743554901922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149006261) 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, 33576 + ... + 37753.

It is an arithmetic number, because the mean of its divisors is an integer number (37269925).

Almost surely, 2^149006281 is an apocalyptic number.

It is an amenable number.

149006281 is a deficient number, since it is larger than the sum of its proper divisors (73419).

149006281 is an equidigital number, since it uses as much as digits as its factorization.

149006281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73418.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 149006281 is about 12206.8128928070. The cubic root of 149006281 is about 530.1533684545.

The spelling of 149006281 in words is "one hundred forty-nine million, six thousand, two hundred eighty-one".