145378 has 4 divisors (see below), whose sum is σ = 218070. Its totient is φ = 72688.

The previous prime is 145361. The next prime is 145381. The reversal of 145378 is 873541.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 142129 + 3249 = 377^2 + 57^2 .

It is a super-2 number, since 2×145378² = 42269525768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36343 + ... + 36346.

2¹⁴⁵³⁷⁸ is an apocalyptic number.

145378 is a deficient number, since it is larger than the sum of its proper divisors (72692).

145378 is an equidigital number, since it uses as much as digits as its factorization.

145378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72691.

The product of its digits is 3360, while the sum is 28.

The square root of 145378 is about 381.2846705547. The cubic root of 145378 is about 52.5814909794.

The spelling of 145378 in words is "one hundred forty-five thousand, three hundred seventy-eight".