150421321 has 10 divisors (see below), whose sum is σ = 159911282.
Its totient is φ = 141494400.
The previous prime is 150421319. The next prime is 150421373. The reversal of 150421321 is 123124051.
It can be written as a sum of positive squares in 5 ways, for example, as 15625 + 150405696 = 125^2 + 12264^2
It is not a de Polignac number, because 150421321 - 21 = 150421319 is a prime.
It is a super-2 number, since 2×1504213212 = 45253147622770082, which contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (150421121) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (17) of ones.
It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 82621 + ... + 84421.
Almost surely, 2150421321 is an apocalyptic number.
It is an amenable number.
150421321 is a deficient number, since it is larger than the sum of its proper divisors (9489961).
150421321 is an frugal number, since it uses more digits than its factorization.
150421321 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1869 (or 1818 counting only the distinct ones).
The product of its (nonzero) digits is 240, while the sum is 19.
The square root of 150421321 is about 12264.6370105275.
The cubic root of 150421321 is about 531.8262866327.
Adding to 150421321 its reverse (123124051), we get a palindrome (273545372).
The spelling of 150421321 in words is "one hundred fifty million, four hundred twenty-one thousand, three hundred twenty-one".