144459442 has 12 divisors (see below), whose sum is σ = 223907598. Its totient is φ = 69898800.

The previous prime is 144459439. The next prime is 144459463. The reversal of 144459442 is 244954441.

It can be written as a sum of positive squares in only one way, i.e., 130850721 + 13608721 = 11439^2 + 3689^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35659 + ... + 39502.

Almost surely, 2^144459442 is an apocalyptic number.

144459442 is a deficient number, since it is larger than the sum of its proper divisors (79448156).

144459442 is an equidigital number, since it uses as much as digits as its factorization.

144459442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75225 (or 75194 counting only the distinct ones).

The product of its digits is 92160, while the sum is 37.

The square root of 144459442 is about 12019.1281713775. The cubic root of 144459442 is about 524.7051308636.

The spelling of 144459442 in words is "one hundred forty-four million, four hundred fifty-nine thousand, four hundred forty-two".