144121501 has 4 divisors (see below), whose sum is σ = 144984672. Its totient is φ = 143258332.

The previous prime is 144121499. The next prime is 144121513. The reversal of 144121501 is 105121441.

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, and also an emirpimes, since its reverse is a distinct semiprime: 105121441 = 4423 ⋅23767.

It is a cyclic number.

It is not a de Polignac number, because 144121501 - 2¹ = 144121499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144121531) 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, 431335 + ... + 431668.

It is an arithmetic number, because the mean of its divisors is an integer number (36246168).

Almost surely, 2^144121501 is an apocalyptic number.

It is an amenable number.

144121501 is a deficient number, since it is larger than the sum of its proper divisors (863171).

144121501 is an equidigital number, since it uses as much as digits as its factorization.

144121501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863170.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 144121501 is about 12005.0614742283. The cubic root of 144121501 is about 524.2956553163.

Adding to 144121501 its reverse (105121441), we get a palindrome (249242942).

The spelling of 144121501 in words is "one hundred forty-four million, one hundred twenty-one thousand, five hundred one".