144872345 has 4 divisors (see below), whose sum is σ = 173846820. Its totient is φ = 115897872.

The previous prime is 144872341. The next prime is 144872347. The reversal of 144872345 is 543278441.

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 38204761 + 106667584 = 6181^2 + 10328^2 .

It is a cyclic number.

It is not a de Polignac number, because 144872345 - 2² = 144872341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 144872299 and 144872308.

It is not an unprimeable number, because it can be changed into a prime (144872341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14487230 + ... + 14487239.

It is an arithmetic number, because the mean of its divisors is an integer number (43461705).

Almost surely, 2^144872345 is an apocalyptic number.

It is an amenable number.

144872345 is a deficient number, since it is larger than the sum of its proper divisors (28974475).

144872345 is an equidigital number, since it uses as much as digits as its factorization.

144872345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28974474.

The product of its digits is 107520, while the sum is 38.

The square root of 144872345 is about 12036.2928262817. The cubic root of 144872345 is about 525.2045703150.

The spelling of 144872345 in words is "one hundred forty-four million, eight hundred seventy-two thousand, three hundred forty-five".