1042259665 has 8 divisors (see below), whose sum is σ = 1263606120. Its totient is φ = 825211392.

The previous prime is 1042259597. The next prime is 1042259683. The reversal of 1042259665 is 5669522401.

It can be written as a sum of positive squares in 4 ways, for example, as 68757264 + 973502401 = 8292^2 + 31201^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1042259665 - 2¹³ = 1042251473 is a prime.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1074010 + ... + 1074979.

It is an arithmetic number, because the mean of its divisors is an integer number (157950765).

Almost surely, 2^1042259665 is an apocalyptic number.

It is an amenable number.

1042259665 is a deficient number, since it is larger than the sum of its proper divisors (221346455).

1042259665 is an equidigital number, since it uses as much as digits as its factorization.

1042259665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149091.

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 1042259665 is about 32284.0466019983. The cubic root of 1042259665 is about 1013.8926553396.

The spelling of 1042259665 in words is "one billion, forty-two million, two hundred fifty-nine thousand, six hundred sixty-five".