145123019 has 2 divisors, whose sum is σ = 145123020. Its totient is φ = 145123018.

The previous prime is 145122941. The next prime is 145123021. The reversal of 145123019 is 910321541.

145123019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 145123019 - 2¹² = 145118923 is a prime.

It is a super-2 number, since 2×145123019² = 42121381287348722, which contains 22 as substring.

Together with 145123021, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (145123039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72561509 + 72561510.

It is an arithmetic number, because the mean of its divisors is an integer number (72561510).

Almost surely, 2^145123019 is an apocalyptic number.

145123019 is a deficient number, since it is larger than the sum of its proper divisors (1).

145123019 is an equidigital number, since it uses as much as digits as its factorization.

145123019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 145123019 is about 12046.7015817609. The cubic root of 145123019 is about 525.5073179251.

The spelling of 145123019 in words is "one hundred forty-five million, one hundred twenty-three thousand, nineteen".