144142745 has 8 divisors (see below), whose sum is σ = 183146184. Its totient is φ = 108530944.

The previous prime is 144142741. The next prime is 144142781. The reversal of 144142745 is 547241441.

144142745 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 35378704 + 108764041 = 5948^2 + 10429^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 144142745 - 2² = 144142741 is a prime.

It is a super-2 number, since 2×144142745² = 41554261872270050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144142741) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 847814 + ... + 847983.

It is an arithmetic number, because the mean of its divisors is an integer number (22893273).

Almost surely, 2^144142745 is an apocalyptic number.

It is an amenable number.

144142745 is a deficient number, since it is larger than the sum of its proper divisors (39003439).

144142745 is a wasteful number, since it uses less digits than its factorization.

144142745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1695819.

The product of its digits is 17920, while the sum is 32.

The square root of 144142745 is about 12005.9462350953. The cubic root of 144142745 is about 524.3214150390.

The spelling of 144142745 in words is "one hundred forty-four million, one hundred forty-two thousand, seven hundred forty-five".