145000387 has 4 divisors (see below), whose sum is σ = 165714736. Its totient is φ = 124286040.

The previous prime is 145000379. The next prime is 145000403. The reversal of 145000387 is 783000541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783000541 = 103 ⋅7601947.

It is a cyclic number.

It is not a de Polignac number, because 145000387 - 2³ = 145000379 is a prime.

It is a super-2 number, since 2×145000387² = 42050224460299538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145000307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10357164 + ... + 10357177.

It is an arithmetic number, because the mean of its divisors is an integer number (41428684).

Almost surely, 2^145000387 is an apocalyptic number.

145000387 is a deficient number, since it is larger than the sum of its proper divisors (20714349).

145000387 is an equidigital number, since it uses as much as digits as its factorization.

145000387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20714348.

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

The square root of 145000387 is about 12041.6106480819. The cubic root of 145000387 is about 525.3592546370.

The spelling of 145000387 in words is "one hundred forty-five million, three hundred eighty-seven", and thus it is an aban number.