780042351 has 12 divisors (see below), whose sum is σ = 1143203096. Its totient is φ = 472752720.

The previous prime is 780042349. The next prime is 780042353. The reversal of 780042351 is 153240087.

It is an interprime number because it is at equal distance from previous prime (780042349) and next prime (780042353).

It is not a de Polignac number, because 780042351 - 2¹ = 780042349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780042353) 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, 1074076 + ... + 1074801.

Almost surely, 2^780042351 is an apocalyptic number.

780042351 is a deficient number, since it is larger than the sum of its proper divisors (363160745).

780042351 is a wasteful number, since it uses less digits than its factorization.

780042351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2148902 (or 2148891 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 780042351 is about 27929.2382817720. The cubic root of 780042351 is about 920.5330681169.

The spelling of 780042351 in words is "seven hundred eighty million, forty-two thousand, three hundred fifty-one".