149254081 has 2 divisors, whose sum is σ = 149254082. Its totient is φ = 149254080.

The previous prime is 149254073. The next prime is 149254087. The reversal of 149254081 is 180452941.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 141991056 + 7263025 = 11916^2 + 2695^2 .

It is an emirp because it is prime and its reverse (180452941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149254081 - 2³ = 149254073 is a prime.

It is a super-2 number, since 2×149254081² = 44553561390309122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (149254087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74627040 + 74627041.

It is an arithmetic number, because the mean of its divisors is an integer number (74627041).

Almost surely, 2^149254081 is an apocalyptic number.

It is an amenable number.

149254081 is a deficient number, since it is larger than the sum of its proper divisors (1).

149254081 is an equidigital number, since it uses as much as digits as its factorization.

149254081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 149254081 is about 12216.9587459400. The cubic root of 149254081 is about 530.4470904068.

The spelling of 149254081 in words is "one hundred forty-nine million, two hundred fifty-four thousand, eighty-one".