378042523 has 2 divisors, whose sum is σ = 378042524. Its totient is φ = 378042522.

The previous prime is 378042503. The next prime is 378042569. The reversal of 378042523 is 325240873.

It is a weak prime.

It is an emirp because it is prime and its reverse (325240873) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 378042523 - 2⁵ = 378042491 is a prime.

It is a super-2 number, since 2×378042523² = 285832298392411058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (378042503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189021261 + 189021262.

It is an arithmetic number, because the mean of its divisors is an integer number (189021262).

Almost surely, 2^378042523 is an apocalyptic number.

378042523 is a deficient number, since it is larger than the sum of its proper divisors (1).

378042523 is an equidigital number, since it uses as much as digits as its factorization.

378042523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 34.

The square root of 378042523 is about 19443.3156380284. The cubic root of 378042523 is about 723.0697910612.

The spelling of 378042523 in words is "three hundred seventy-eight million, forty-two thousand, five hundred twenty-three".