145134419 has 2 divisors, whose sum is σ = 145134420. Its totient is φ = 145134418.

The previous prime is 145134401. The next prime is 145134443. The reversal of 145134419 is 914431541.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145134419 is a prime.

It is a super-2 number, since 2×145134419² = 42127999156935122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145134719) by changing a digit.

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 as a sum of consecutive naturals, namely, 72567209 + 72567210.

It is an arithmetic number, because the mean of its divisors is an integer number (72567210).

Almost surely, 2^145134419 is an apocalyptic number.

145134419 is a deficient number, since it is larger than the sum of its proper divisors (1).

145134419 is an equidigital number, since it uses as much as digits as its factorization.

145134419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 145134419 is about 12047.1747310313. The cubic root of 145134419 is about 525.5210778065.

The spelling of 145134419 in words is "one hundred forty-five million, one hundred thirty-four thousand, four hundred nineteen".