1942669 has 2 divisors, whose sum is σ = 1942670. Its totient is φ = 1942668.

The previous prime is 1942657. The next prime is 1942723. The reversal of 1942669 is 9662491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1729225 + 213444 = 1315^2 + 462^2 .

It is an emirp because it is prime and its reverse (9662491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1942669 - 2¹¹ = 1940621 is a prime.

It is a super-2 number, since 2×1942669² = 7547925687122, which contains 22 as substring.

It is a Chen prime.

1942669 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1942169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 971334 + 971335.

It is an arithmetic number, because the mean of its divisors is an integer number (971335).

2^1942669 is an apocalyptic number.

It is an amenable number.

1942669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1942669 is an equidigital number, since it uses as much as digits as its factorization.

1942669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 1942669 is about 1393.7966135703. The cubic root of 1942669 is about 124.7765394277.

The spelling of 1942669 in words is "one million, nine hundred forty-two thousand, six hundred sixty-nine".