145123529 has 2 divisors, whose sum is σ = 145123530. Its totient is φ = 145123528.

The previous prime is 145123513. The next prime is 145123547. The reversal of 145123529 is 925321541.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 77440000 + 67683529 = 8800^2 + 8227^2 .

It is a cyclic number.

It is not a de Polignac number, because 145123529 - 2⁴ = 145123513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145123495 and 145123504.

It is not a weakly prime, because it can be changed into another prime (145123829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72561764 + 72561765.

It is an arithmetic number, because the mean of its divisors is an integer number (72561765).

Almost surely, 2^145123529 is an apocalyptic number.

It is an amenable number.

145123529 is a deficient number, since it is larger than the sum of its proper divisors (1).

145123529 is an equidigital number, since it uses as much as digits as its factorization.

145123529 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10800, while the sum is 32.

The square root of 145123529 is about 12046.7227493622. The cubic root of 145123529 is about 525.5079335142.

The spelling of 145123529 in words is "one hundred forty-five million, one hundred twenty-three thousand, five hundred twenty-nine".