144726431 has 4 divisors (see below), whose sum is σ = 144751992. Its totient is φ = 144700872.

The previous prime is 144726427. The next prime is 144726451. The reversal of 144726431 is 134627441.

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

It is a cyclic number.

It is not a de Polignac number, because 144726431 - 2² = 144726427 is a prime.

It is a super-2 number, since 2×144726431² = 41891479659995522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144726451) 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, 80 + ... + 17013.

It is an arithmetic number, because the mean of its divisors is an integer number (36187998).

Almost surely, 2^144726431 is an apocalyptic number.

144726431 is a deficient number, since it is larger than the sum of its proper divisors (25561).

144726431 is an equidigital number, since it uses as much as digits as its factorization.

144726431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25560.

The product of its digits is 16128, while the sum is 32.

The square root of 144726431 is about 12030.2298814279. The cubic root of 144726431 is about 525.0281841256.

The spelling of 144726431 in words is "one hundred forty-four million, seven hundred twenty-six thousand, four hundred thirty-one".