1042940693 has 4 divisors (see below), whose sum is σ = 1058507040. Its totient is φ = 1027374348.

The previous prime is 1042940671. The next prime is 1042940711. The reversal of 1042940693 is 3960492401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1042940693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042940653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7783073 + ... + 7783206.

It is an arithmetic number, because the mean of its divisors is an integer number (264626760).

Almost surely, 2^1042940693 is an apocalyptic number.

It is an amenable number.

1042940693 is a deficient number, since it is larger than the sum of its proper divisors (15566347).

1042940693 is an equidigital number, since it uses as much as digits as its factorization.

1042940693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15566346.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 1042940693 is about 32294.5923182195. The cubic root of 1042940693 is about 1014.1134381167.

The spelling of 1042940693 in words is "one billion, forty-two million, nine hundred forty thousand, six hundred ninety-three".