780292842 has 16 divisors (see below), whose sum is σ = 1783526592. Its totient is φ = 222940800.

The previous prime is 780292823. The next prime is 780292897. The reversal of 780292842 is 248292087.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 18578401 = 780292842 / (7 + 8 + 0 + 2 + 9 + 2 + 8 + 4 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 780292794 and 780292803.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9289159 + ... + 9289242.

It is an arithmetic number, because the mean of its divisors is an integer number (111470412).

Almost surely, 2^780292842 is an apocalyptic number.

780292842 is an abundant number, since it is smaller than the sum of its proper divisors (1003233750).

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

780292842 is a wasteful number, since it uses less digits than its factorization.

780292842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18578413.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 780292842 is about 27933.7223083498. The cubic root of 780292842 is about 920.6315929259.

The spelling of 780292842 in words is "seven hundred eighty million, two hundred ninety-two thousand, eight hundred forty-two".