145430138 has 24 divisors (see below), whose sum is σ = 268690932. Its totient is φ = 58660224.

The previous prime is 145430137. The next prime is 145430143. The reversal of 145430138 is 831034541.

145430138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 122168809 + 23261329 = 11053^2 + 4823^2 .

It is a super-2 number, since 2×145430138² = 42299850077398088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145430138.

It is not an unprimeable number, because it can be changed into a prime (145430137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41981 + ... + 45312.

Almost surely, 2^145430138 is an apocalyptic number.

145430138 is a deficient number, since it is larger than the sum of its proper divisors (123260794).

145430138 is a wasteful number, since it uses less digits than its factorization.

145430138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87326 (or 87319 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 145430138 is about 12059.4418610481. The cubic root of 145430138 is about 525.8777612597.

Adding to 145430138 its reverse (831034541), we get a palindrome (976464679).

The spelling of 145430138 in words is "one hundred forty-five million, four hundred thirty thousand, one hundred thirty-eight".