150138321 has 8 divisors (see below), whose sum is σ = 200401824. Its totient is φ = 99983520.

The previous prime is 150138311. The next prime is 150138337. The reversal of 150138321 is 123831051.

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

It is not a de Polignac number, because 150138321 - 2⁹ = 150137809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 150138291 and 150138300.

It is not an unprimeable number, because it can be changed into a prime (150138311) 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, 23895 + ... + 29516.

It is an arithmetic number, because the mean of its divisors is an integer number (25050228).

Almost surely, 2^150138321 is an apocalyptic number.

It is an amenable number.

150138321 is a deficient number, since it is larger than the sum of its proper divisors (50263503).

150138321 is an equidigital number, since it uses as much as digits as its factorization.

150138321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54351.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 150138321 is about 12253.0943438790. The cubic root of 150138321 is about 531.4925544112.

Adding to 150138321 its reverse (123831051), we get a palindrome (273969372).

The spelling of 150138321 in words is "one hundred fifty million, one hundred thirty-eight thousand, three hundred twenty-one".