149842081 has 3 divisors (see below), whose sum is σ = 149854323. Its totient is φ = 149829840.

The previous prime is 149842061. The next prime is 149842109. The reversal of 149842081 is 180248941.

The square root of 149842081 is 12241.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 38328481 + 111513600 = 6191^2 + 10560^2 .

It is not a de Polignac number, because 149842081 - 2¹³ = 149833889 is a prime.

It is a super-2 number, since 2×149842081² = 44905298476821122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149842081.

It is not an unprimeable number, because it can be changed into a prime (149842061) 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 2 ways as a sum of consecutive naturals, for example, 6121 + ... + 18361.

It is an arithmetic number, because the mean of its divisors is an integer number (49951441).

Almost surely, 2^149842081 is an apocalyptic number.

149842081 is the 12241-st square number.

149842081 is the 6121-st centered octagonal number.

It is an amenable number.

149842081 is a deficient number, since it is larger than the sum of its proper divisors (12242).

149842081 is an frugal number, since it uses more digits than its factorization.

149842081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24482 (or 12241 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 37.

The cubic root of 149842081 is about 531.1427591422.

The spelling of 149842081 in words is "one hundred forty-nine million, eight hundred forty-two thousand, eighty-one".