144874242 has 18 divisors (see below), whose sum is σ = 314004873. Its totient is φ = 48274392.

The previous prime is 144874231. The next prime is 144874291. The reversal of 144874242 is 242478441.

It can be written as a sum of positive squares in 2 ways, for example, as 98783721 + 46090521 = 9939^2 + 6789^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=8511.

It is a junction number, because it is equal to n+sod(n) for n = 144874197 and 144874206.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 49648 + ... + 52484.

Almost surely, 2^144874242 is an apocalyptic number.

144874242 is an abundant number, since it is smaller than the sum of its proper divisors (169130631).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

144874242 is an frugal number, since it uses more digits than its factorization.

144874242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5682 (or 2842 counting only the distinct ones).

The product of its digits is 57344, while the sum is 36.

The square root of 144874242 is about 12036.3716293574. The cubic root of 144874242 is about 525.2068626981.

The spelling of 144874242 in words is "one hundred forty-four million, eight hundred seventy-four thousand, two hundred forty-two".