1642123367 has 2 divisors, whose sum is σ = 1642123368. Its totient is φ = 1642123366.

The previous prime is 1642123363. The next prime is 1642123391. The reversal of 1642123367 is 7633212461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1642123367 - 2² = 1642123363 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1642123363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 821061683 + 821061684.

It is an arithmetic number, because the mean of its divisors is an integer number (821061684).

Almost surely, 2^1642123367 is an apocalyptic number.

1642123367 is a deficient number, since it is larger than the sum of its proper divisors (1).

1642123367 is an equidigital number, since it uses as much as digits as its factorization.

1642123367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 35.

The square root of 1642123367 is about 40523.1213876720. The cubic root of 1642123367 is about 1179.7824378652.

The spelling of 1642123367 in words is "one billion, six hundred forty-two million, one hundred twenty-three thousand, three hundred sixty-seven".