1942399 has 2 divisors, whose sum is σ = 1942400. Its totient is φ = 1942398.

The previous prime is 1942387. The next prime is 1942411. The reversal of 1942399 is 9932491.

It is a balanced prime because it is at equal distance from previous prime (1942387) and next prime (1942411).

It is an emirp because it is prime and its reverse (9932491) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1942399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1942309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 971199 + 971200.

It is an arithmetic number, because the mean of its divisors is an integer number (971200).

2^1942399 is an apocalyptic number.

1942399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1942399 is an equidigital number, since it uses as much as digits as its factorization.

1942399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 37.

The square root of 1942399 is about 1393.6997524575. The cubic root of 1942399 is about 124.7707585104.

The spelling of 1942399 in words is "one million, nine hundred forty-two thousand, three hundred ninety-nine".