780142841 has 4 divisors (see below), whose sum is σ = 791786832. Its totient is φ = 768498852.

The previous prime is 780142823. The next prime is 780142861. The reversal of 780142841 is 148241087.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 148241087 = 1129 ⋅131303.

It is a cyclic number.

It is not a de Polignac number, because 780142841 - 2⁶ = 780142777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (780142861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5821895 + ... + 5822028.

It is an arithmetic number, because the mean of its divisors is an integer number (197946708).

Almost surely, 2^780142841 is an apocalyptic number.

It is an amenable number.

780142841 is a deficient number, since it is larger than the sum of its proper divisors (11643991).

780142841 is a wasteful number, since it uses less digits than its factorization.

780142841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11643990.

The product of its (nonzero) digits is 14336, while the sum is 35.

The square root of 780142841 is about 27931.0372345891. The cubic root of 780142841 is about 920.5725960544.

The spelling of 780142841 in words is "seven hundred eighty million, one hundred forty-two thousand, eight hundred forty-one".