145138412 has 12 divisors (see below), whose sum is σ = 254938320. Its totient is φ = 72298896.

The previous prime is 145138393. The next prime is 145138423. The reversal of 145138412 is 214831541.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66368 + ... + 68519.

It is an arithmetic number, because the mean of its divisors is an integer number (21244860).

Almost surely, 2^145138412 is an apocalyptic number.

It is an amenable number.

145138412 is a deficient number, since it is larger than the sum of its proper divisors (109799908).

145138412 is a wasteful number, since it uses less digits than its factorization.

145138412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135160 (or 135158 counting only the distinct ones).

The product of its digits is 3840, while the sum is 29.

The square root of 145138412 is about 12047.3404533947. The cubic root of 145138412 is about 525.5258972156.

Adding to 145138412 its reverse (214831541), we get a palindrome (359969953).

The spelling of 145138412 in words is "one hundred forty-five million, one hundred thirty-eight thousand, four hundred twelve".