150030721 has 4 divisors (see below), whose sum is σ = 153222912. Its totient is φ = 146838532.

The previous prime is 150030653. The next prime is 150030737. The reversal of 150030721 is 127030051.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-150030721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (150030791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1596025 + ... + 1596118.

It is an arithmetic number, because the mean of its divisors is an integer number (38305728).

Almost surely, 2^150030721 is an apocalyptic number.

It is an amenable number.

150030721 is a deficient number, since it is larger than the sum of its proper divisors (3192191).

150030721 is an equidigital number, since it uses as much as digits as its factorization.

150030721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3192190.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 150030721 is about 12248.7028292795. The cubic root of 150030721 is about 531.3655553751.

Adding to 150030721 its reverse (127030051), we get a palindrome (277060772).

The spelling of 150030721 in words is "one hundred fifty million, thirty thousand, seven hundred twenty-one".