145344239 has 8 divisors (see below), whose sum is σ = 148173360. Its totient is φ = 142534656.

The previous prime is 145344223. The next prime is 145344253. The reversal of 145344239 is 932443541.

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 145344239 - 2⁴ = 145344223 is a prime.

It is a super-2 number, since 2×145344239² = 42249895620978242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145344199 and 145344208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145344289) 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, 10607 + ... + 20079.

It is an arithmetic number, because the mean of its divisors is an integer number (18521670).

Almost surely, 2^145344239 is an apocalyptic number.

145344239 is a deficient number, since it is larger than the sum of its proper divisors (2829121).

145344239 is an equidigital number, since it uses as much as digits as its factorization.

145344239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9769.

The product of its digits is 51840, while the sum is 35.

The square root of 145344239 is about 12055.8798517570. The cubic root of 145344239 is about 525.7742034710.

The spelling of 145344239 in words is "one hundred forty-five million, three hundred forty-four thousand, two hundred thirty-nine".