145478 has 4 divisors (see below), whose sum is σ = 218220. Its totient is φ = 72738.

The previous prime is 145477. The next prime is 145487. The reversal of 145478 is 874541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 874541 = 31 ⋅28211.

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

It is a self number, because there is not a number n which added to its sum of digits gives 145478.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 145478.

It is not an unprimeable number, because it can be changed into a prime (145471) by changing a digit.

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, 36368 + ... + 36371.

It is an arithmetic number, because the mean of its divisors is an integer number (54555).

2¹⁴⁵⁴⁷⁸ is an apocalyptic number.

145478 is a deficient number, since it is larger than the sum of its proper divisors (72742).

145478 is an equidigital number, since it uses as much as digits as its factorization.

145478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72741.

The product of its digits is 4480, while the sum is 29.

The square root of 145478 is about 381.4157836273. The cubic root of 145478 is about 52.5935444857.

The spelling of 145478 in words is "one hundred forty-five thousand, four hundred seventy-eight".