765198442 has 4 divisors (see below), whose sum is σ = 1147797666. Its totient is φ = 382599220.

The previous prime is 765198403. The next prime is 765198449. The reversal of 765198442 is 244891567.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 728946001 + 36252441 = 26999^2 + 6021^2 .

It is a junction number, because it is equal to n+sod(n) for n = 765198392 and 765198401.

It is not an unprimeable number, because it can be changed into a prime (765198449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191299609 + ... + 191299612.

Almost surely, 2^765198442 is an apocalyptic number.

765198442 is a deficient number, since it is larger than the sum of its proper divisors (382599224).

765198442 is a wasteful number, since it uses less digits than its factorization.

765198442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382599223.

The product of its digits is 483840, while the sum is 46.

The square root of 765198442 is about 27662.2204820943. The cubic root of 765198442 is about 914.6565014002.

The spelling of 765198442 in words is "seven hundred sixty-five million, one hundred ninety-eight thousand, four hundred forty-two".