1042246489 has 4 divisors (see below), whose sum is σ = 1103555124. Its totient is φ = 980937856.

The previous prime is 1042246487. The next prime is 1042246519. The reversal of 1042246489 is 9846422401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9846422401 = 919 ⋅10714279.

It can be written as a sum of positive squares in 2 ways, for example, as 972940864 + 69305625 = 31192^2 + 8325^2 .

It is a cyclic number.

It is not a de Polignac number, because 1042246489 - 2¹ = 1042246487 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1042246487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30654292 + ... + 30654325.

It is an arithmetic number, because the mean of its divisors is an integer number (275888781).

Almost surely, 2^1042246489 is an apocalyptic number.

It is an amenable number.

1042246489 is a deficient number, since it is larger than the sum of its proper divisors (61308635).

1042246489 is an equidigital number, since it uses as much as digits as its factorization.

1042246489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61308634.

The product of its (nonzero) digits is 110592, while the sum is 40.

The square root of 1042246489 is about 32283.8425377154. The cubic root of 1042246489 is about 1013.8883828579. Note that the first 3 decimals are identical.

The spelling of 1042246489 in words is "one billion, forty-two million, two hundred forty-six thousand, four hundred eighty-nine".