1042699657 has 8 divisors (see below), whose sum is σ = 1070724872. Its totient is φ = 1015027200.

The previous prime is 1042699639. The next prime is 1042699673. The reversal of 1042699657 is 7569962401.

It is a happy number.

1042699657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3024121 + 1039675536 = 1739^2 + 32244^2 .

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 1042699657 - 2¹⁹ = 1042175369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1042699657.

It is not an unprimeable number, because it can be changed into a prime (1042696657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82194 + ... + 94027.

It is an arithmetic number, because the mean of its divisors is an integer number (133840609).

Almost surely, 2^1042699657 is an apocalyptic number.

It is an amenable number.

1042699657 is a deficient number, since it is larger than the sum of its proper divisors (28025215).

1042699657 is an equidigital number, since it uses as much as digits as its factorization.

1042699657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176379.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 1042699657 is about 32290.8602703613. The cubic root of 1042699657 is about 1014.0353075379.

The spelling of 1042699657 in words is "one billion, forty-two million, six hundred ninety-nine thousand, six hundred fifty-seven".