145123497 has 12 divisors (see below), whose sum is σ = 209858740. Its totient is φ = 96640128.

The previous prime is 145123471. The next prime is 145123499. The reversal of 145123497 is 794321541.

145123497 is a `hidden beast` number, since 1 + 45 + 123 + 497 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 31573161 + 113550336 = 5619^2 + 10656^2 .

It is a de Polignac number, because none of the positive numbers 2^k-145123497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145123499) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172 + ... + 17037.

Almost surely, 2^145123497 is an apocalyptic number.

It is an amenable number.

145123497 is a deficient number, since it is larger than the sum of its proper divisors (64735243).

145123497 is a wasteful number, since it uses less digits than its factorization.

145123497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18152 (or 18149 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 145123497 is about 12046.7214212000. The cubic root of 145123497 is about 525.5078948890.

The spelling of 145123497 in words is "one hundred forty-five million, one hundred twenty-three thousand, four hundred ninety-seven".