145492 has 6 divisors (see below), whose sum is σ = 254618. Its totient is φ = 72744.

The previous prime is 145487. The next prime is 145501. The reversal of 145492 is 294541.

It can be written as a sum of positive squares in only one way, i.e., 132496 + 12996 = 364^2 + 114^2 .

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

145492 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18183 + ... + 18190.

2¹⁴⁵⁴⁹² is an apocalyptic number.

It is an amenable number.

145492 is a deficient number, since it is larger than the sum of its proper divisors (109126).

145492 is a wasteful number, since it uses less digits than its factorization.

145492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36377 (or 36375 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 145492 is about 381.4341358610. The cubic root of 145492 is about 52.5952315358.

The spelling of 145492 in words is "one hundred forty-five thousand, four hundred ninety-two".