145240823 has 16 divisors (see below), whose sum is σ = 179128320. Its totient is φ = 114677856.

The previous prime is 145240801. The next prime is 145240853. The reversal of 145240823 is 328042541.

It is a happy number.

145240823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 145240823 - 2⁸ = 145240567 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145240853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52058 + ... + 54776.

It is an arithmetic number, because the mean of its divisors is an integer number (11195520).

Almost surely, 2^145240823 is an apocalyptic number.

145240823 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

145240823 is a deficient number, since it is larger than the sum of its proper divisors (33887497).

145240823 is a wasteful number, since it uses less digits than its factorization.

145240823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3326.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 145240823 is about 12051.5900610666. The cubic root of 145240823 is about 525.6494734587.

The spelling of 145240823 in words is "one hundred forty-five million, two hundred forty thousand, eight hundred twenty-three".