145130639 has 2 divisors, whose sum is σ = 145130640. Its totient is φ = 145130638.

The previous prime is 145130617. The next prime is 145130641. The reversal of 145130639 is 936031541.

It is a strong prime.

It is an emirp because it is prime and its reverse (936031541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145130639 - 2¹⁶ = 145065103 is a prime.

Together with 145130641, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145130659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72565319 + 72565320.

It is an arithmetic number, because the mean of its divisors is an integer number (72565320).

Almost surely, 2^145130639 is an apocalyptic number.

145130639 is a deficient number, since it is larger than the sum of its proper divisors (1).

145130639 is an equidigital number, since it uses as much as digits as its factorization.

145130639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 145130639 is about 12047.0178467536. The cubic root of 145130639 is about 525.5165153994.

The spelling of 145130639 in words is "one hundred forty-five million, one hundred thirty thousand, six hundred thirty-nine".