149321 has 8 divisors (see below), whose sum is σ = 163200. Its totient is φ = 136080.

The previous prime is 149309. The next prime is 149323. The reversal of 149321 is 123941.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 149321 - 2⁶ = 149257 is a prime.

It is a super-2 number, since 2×149321² = 44593522082, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 149293 and 149302.

It is not an unprimeable number, because it can be changed into a prime (149323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416 + ... + 686.

It is an arithmetic number, because the mean of its divisors is an integer number (20400).

2¹⁴⁹³²¹ is an apocalyptic number.

It is an amenable number.

149321 is a deficient number, since it is larger than the sum of its proper divisors (13879).

149321 is a wasteful number, since it uses less digits than its factorization.

149321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319.

The product of its digits is 216, while the sum is 20.

The square root of 149321 is about 386.4207551362. The cubic root of 149321 is about 53.0526354984.

The spelling of 149321 in words is "one hundred forty-nine thousand, three hundred twenty-one".