123465019 has 2 divisors, whose sum is σ = 123465020. Its totient is φ = 123465018.

The previous prime is 123465007. The next prime is 123465031. The reversal of 123465019 is 910564321.

It is a balanced prime because it is at equal distance from previous prime (123465007) and next prime (123465031).

It is an emirp because it is prime and its reverse (910564321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123465019 - 2¹¹ = 123462971 is a prime.

It is a super-2 number, since 2×123465019² = 30487221833340722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (123465049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61732509 + 61732510.

It is an arithmetic number, because the mean of its divisors is an integer number (61732510).

Almost surely, 2^123465019 is an apocalyptic number.

123465019 is a deficient number, since it is larger than the sum of its proper divisors (1).

123465019 is an equidigital number, since it uses as much as digits as its factorization.

123465019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 123465019 is about 11111.4814043853. The cubic root of 123465019 is about 497.9449235607.

The spelling of 123465019 in words is "one hundred twenty-three million, four hundred sixty-five thousand, nineteen".