149793121 has 3 divisors (see below), whose sum is σ = 149805361. Its totient is φ = 149780882.

The previous prime is 149793067. The next prime is 149793143. The reversal of 149793121 is 121397941.

The square root of 149793121 is 12239.

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

149793121 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 a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 149793121 - 2¹¹ = 149791073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (149793521) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6120 + ... + 18358.

Almost surely, 2^149793121 is an apocalyptic number.

149793121 is the 12239-th square number.

149793121 is the 6120-th centered octagonal number.

It is an amenable number.

149793121 is a deficient number, since it is larger than the sum of its proper divisors (12240).

149793121 is an frugal number, since it uses more digits than its factorization.

149793121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24478 (or 12239 counting only the distinct ones).

The product of its digits is 13608, while the sum is 37.

The cubic root of 149793121 is about 531.0849036049.

The spelling of 149793121 in words is "one hundred forty-nine million, seven hundred ninety-three thousand, one hundred twenty-one".