145239929 has 8 divisors (see below), whose sum is σ = 150189312. Its totient is φ = 140307120.

The previous prime is 145239893. The next prime is 145239937. The reversal of 145239929 is 929932541.

It is a happy number.

145239929 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145239929 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 145239929.

It is not an unprimeable number, because it can be changed into a prime (145239329) 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, 15182 + ... + 22824.

It is an arithmetic number, because the mean of its divisors is an integer number (18773664).

Almost surely, 2^145239929 is an apocalyptic number.

It is an amenable number.

145239929 is a deficient number, since it is larger than the sum of its proper divisors (4949383).

145239929 is an equidigital number, since it uses as much as digits as its factorization.

145239929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8287.

The product of its digits is 174960, while the sum is 44.

The square root of 145239929 is about 12051.5529704682. The cubic root of 145239929 is about 525.6483949475.

The spelling of 145239929 in words is "one hundred forty-five million, two hundred thirty-nine thousand, nine hundred twenty-nine".