1442869 has 2 divisors, whose sum is σ = 1442870. Its totient is φ = 1442868.

The previous prime is 1442863. The next prime is 1442873. The reversal of 1442869 is 9682441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 786769 + 656100 = 887^2 + 810^2 .

It is a cyclic number.

It is not a de Polignac number, because 1442869 - 2¹³ = 1434677 is a prime.

It is a super-2 number, since 2×1442869² = 4163741902322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1442863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721434 + 721435.

It is an arithmetic number, because the mean of its divisors is an integer number (721435).

2^1442869 is an apocalyptic number.

It is an amenable number.

1442869 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442869 is an equidigital number, since it uses as much as digits as its factorization.

1442869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 34.

The square root of 1442869 is about 1201.1948218337. The cubic root of 1442869 is about 112.9992690584. Note that the first 3 decimals are identical.

The spelling of 1442869 in words is "one million, four hundred forty-two thousand, eight hundred sixty-nine".