145140023 has 16 divisors (see below), whose sum is σ = 171555840. Its totient is φ = 120216096.

The previous prime is 145140019. The next prime is 145140049. The reversal of 145140023 is 320041541.

145140023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145140023 - 2² = 145140019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145139977 and 145140004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145140013) 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, 21938 + ... + 27776.

It is an arithmetic number, because the mean of its divisors is an integer number (10722240).

Almost surely, 2^145140023 is an apocalyptic number.

145140023 is a deficient number, since it is larger than the sum of its proper divisors (26415817).

145140023 is an equidigital number, since it uses as much as digits as its factorization.

145140023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5966.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 145140023 is about 12047.4073144391. The cubic root of 145140023 is about 525.5278416103.

Adding to 145140023 its reverse (320041541), we get a palindrome (465181564).

The spelling of 145140023 in words is "one hundred forty-five million, one hundred forty thousand, twenty-three".