150442021 has 4 divisors (see below), whose sum is σ = 150486412. Its totient is φ = 150397632.

The previous prime is 150442009. The next prime is 150442031. The reversal of 150442021 is 120244051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120244051 = 3319 ⋅36229.

It can be written as a sum of positive squares in 2 ways, for example, as 33477796 + 116964225 = 5786^2 + 10815^2 .

It is a cyclic number.

It is not a de Polignac number, because 150442021 - 2⁵ = 150441989 is a prime.

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 150442021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150442031) 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 3 ways as a sum of consecutive naturals, for example, 16650 + ... + 24043.

It is an arithmetic number, because the mean of its divisors is an integer number (37621603).

Almost surely, 2^150442021 is an apocalyptic number.

It is an amenable number.

150442021 is a deficient number, since it is larger than the sum of its proper divisors (44391).

150442021 is an equidigital number, since it uses as much as digits as its factorization.

150442021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44390.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 150442021 is about 12265.4808711277. The cubic root of 150442021 is about 531.8506810007.

Adding to 150442021 its reverse (120244051), we get a palindrome (270686072).

The spelling of 150442021 in words is "one hundred fifty million, four hundred forty-two thousand, twenty-one".