150003121 has 4 divisors (see below), whose sum is σ = 158826852. Its totient is φ = 141179392.

The previous prime is 150003103. The next prime is 150003131. The reversal of 150003121 is 121300051.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 85377600 + 64625521 = 9240^2 + 8039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-150003121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (150003131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4411840 + ... + 4411873.

It is an arithmetic number, because the mean of its divisors is an integer number (39706713).

Almost surely, 2^150003121 is an apocalyptic number.

It is an amenable number.

150003121 is a deficient number, since it is larger than the sum of its proper divisors (8823731).

150003121 is an equidigital number, since it uses as much as digits as its factorization.

150003121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8823730.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 150003121 is about 12247.5761275446. The cubic root of 150003121 is about 531.3329696295.

Adding to 150003121 its reverse (121300051), we get a palindrome (271303172).

The spelling of 150003121 in words is "one hundred fifty million, three thousand, one hundred twenty-one".