786415542 has 48 divisors (see below), whose sum is σ = 1736607600. Its totient is φ = 237233920.

The previous prime is 786415523. The next prime is 786415549. The reversal of 786415542 is 245514687.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 786415494 and 786415503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (786415549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 166834 + ... + 171482.

It is an arithmetic number, because the mean of its divisors is an integer number (36179325).

Almost surely, 2^786415542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 786415542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (868303800).

786415542 is an abundant number, since it is smaller than the sum of its proper divisors (950192058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

786415542 is a wasteful number, since it uses less digits than its factorization.

786415542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4909 (or 4898 counting only the distinct ones).

The product of its digits is 268800, while the sum is 42.

The square root of 786415542 is about 28043.1015046482. The cubic root of 786415542 is about 923.0332860023.

It can be divided in two parts, 786 and 415542, that added together give a triangular number (416328 = T₉₁₂).

The spelling of 786415542 in words is "seven hundred eighty-six million, four hundred fifteen thousand, five hundred forty-two".