765804242 has 24 divisors (see below), whose sum is σ = 1341053820. Its totient is φ = 327022080.

The previous prime is 765804241. The next prime is 765804283. The reversal of 765804242 is 242408567.

It can be written as a sum of positive squares in 2 ways, for example, as 736525321 + 29278921 = 27139^2 + 5411^2 .

It is a super-2 number, since 2×765804242² = 1172912274130389128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 765804196 and 765804205.

It is not an unprimeable number, because it can be changed into a prime (765804241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13634 + ... + 41442.

Almost surely, 2^765804242 is an apocalyptic number.

765804242 is a deficient number, since it is larger than the sum of its proper divisors (575249578).

765804242 is a wasteful number, since it uses less digits than its factorization.

765804242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28106 (or 28099 counting only the distinct ones).

The product of its (nonzero) digits is 107520, while the sum is 38.

The square root of 765804242 is about 27673.1682681980. The cubic root of 765804242 is about 914.8978125502.

The spelling of 765804242 in words is "seven hundred sixty-five million, eight hundred four thousand, two hundred forty-two".