144457426 has 4 divisors (see below), whose sum is σ = 216686142. Its totient is φ = 72228712.

The previous prime is 144457343. The next prime is 144457447. The reversal of 144457426 is 624754441.

144457426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 624754441 = 787 ⋅793843.

It can be written as a sum of positive squares in only one way, i.e., 139830625 + 4626801 = 11825^2 + 2151^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36114355 + ... + 36114358.

Almost surely, 2^144457426 is an apocalyptic number.

144457426 is a deficient number, since it is larger than the sum of its proper divisors (72228716).

144457426 is an equidigital number, since it uses as much as digits as its factorization.

144457426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72228715.

The product of its digits is 107520, while the sum is 37.

The square root of 144457426 is about 12019.0443047690. The cubic root of 144457426 is about 524.7026900160.

The spelling of 144457426 in words is "one hundred forty-four million, four hundred fifty-seven thousand, four hundred twenty-six".