145670139 has 6 divisors (see below), whose sum is σ = 210412436. Its totient is φ = 97113420.

The previous prime is 145670137. The next prime is 145670141. The reversal of 145670139 is 931076541.

145670139 is a `hidden beast` number, since 1 + 456 + 70 + 139 = 666.

It is an interprime number because it is at equal distance from previous prime (145670137) and next prime (145670141).

It is not a de Polignac number, because 145670139 - 2¹ = 145670137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145670137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8092777 + ... + 8092794.

Almost surely, 2^145670139 is an apocalyptic number.

145670139 is a deficient number, since it is larger than the sum of its proper divisors (64742297).

145670139 is a wasteful number, since it uses less digits than its factorization.

145670139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16185577 (or 16185574 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 145670139 is about 12069.3885097796. The cubic root of 145670139 is about 526.1668847885.

The spelling of 145670139 in words is "one hundred forty-five million, six hundred seventy thousand, one hundred thirty-nine".