145424723 has 4 divisors (see below), whose sum is σ = 145950000. Its totient is φ = 144899448.

The previous prime is 145424683. The next prime is 145424729. The reversal of 145424723 is 327424541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 327424541 = 409 ⋅800549.

It is a cyclic number.

It is not a de Polignac number, because 145424723 - 2¹⁴ = 145408339 is a prime.

It is a super-2 number, since 2×145424723² = 42296700119253458, which contains 22 as substring.

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 145424723.

It is not an unprimeable number, because it can be changed into a prime (145424729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262223 + ... + 262776.

It is an arithmetic number, because the mean of its divisors is an integer number (36487500).

Almost surely, 2^145424723 is an apocalyptic number.

145424723 is a deficient number, since it is larger than the sum of its proper divisors (525277).

145424723 is an equidigital number, since it uses as much as digits as its factorization.

145424723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525276.

The product of its digits is 26880, while the sum is 32.

The square root of 145424723 is about 12059.2173460801. The cubic root of 145424723 is about 525.8712342691.

The spelling of 145424723 in words is "one hundred forty-five million, four hundred twenty-four thousand, seven hundred twenty-three".