144454042 has 4 divisors (see below), whose sum is σ = 216681066. Its totient is φ = 72227020.

The previous prime is 144454019. The next prime is 144454043. The reversal of 144454042 is 240454441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 240454441 = 59 ⋅4075499.

It can be written as a sum of positive squares in only one way, i.e., 125014761 + 19439281 = 11181^2 + 4409^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 144454042.

It is not an unprimeable number, because it can be changed into a prime (144454043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36113509 + ... + 36113512.

Almost surely, 2^144454042 is an apocalyptic number.

144454042 is a deficient number, since it is larger than the sum of its proper divisors (72227024).

144454042 is an equidigital number, since it uses as much as digits as its factorization.

144454042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72227023.

The product of its (nonzero) digits is 10240, while the sum is 28.

The square root of 144454042 is about 12018.9035273606. The cubic root of 144454042 is about 524.6985928278.

The spelling of 144454042 in words is "one hundred forty-four million, four hundred fifty-four thousand, forty-two".