144400045 has 4 divisors (see below), whose sum is σ = 173280060. Its totient is φ = 115520032.

The previous prime is 144400033. The next prime is 144400079. The reversal of 144400045 is 540004441.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31573161 + 112826884 = 5619^2 + 10622^2 .

It is a cyclic number.

It is not a de Polignac number, because 144400045 - 2²¹ = 142302893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144399989 and 144400025.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14440000 + ... + 14440009.

It is an arithmetic number, because the mean of its divisors is an integer number (43320015).

Almost surely, 2^144400045 is an apocalyptic number.

It is an amenable number.

144400045 is a deficient number, since it is larger than the sum of its proper divisors (28880015).

144400045 is an equidigital number, since it uses as much as digits as its factorization.

144400045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28880014.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 144400045 is about 12016.6569810409. The cubic root of 144400045 is about 524.6332071396.

Adding to 144400045 its reverse (540004441), we get a palindrome (684404486).

The spelling of 144400045 in words is "one hundred forty-four million, four hundred thousand, forty-five".