770142161 has 4 divisors (see below), whose sum is σ = 790956852. Its totient is φ = 749327472.

The previous prime is 770142151. The next prime is 770142179. The reversal of 770142161 is 161241077.

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

It can be written as a sum of positive squares in 2 ways, for example, as 746327761 + 23814400 = 27319^2 + 4880^2 .

It is a cyclic number.

It is not a de Polignac number, because 770142161 - 2¹⁸ = 769880017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (770142101) 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, 10407290 + ... + 10407363.

It is an arithmetic number, because the mean of its divisors is an integer number (197739213).

Almost surely, 2^770142161 is an apocalyptic number.

It is an amenable number.

770142161 is a deficient number, since it is larger than the sum of its proper divisors (20814691).

770142161 is a wasteful number, since it uses less digits than its factorization.

770142161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20814690.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 770142161 is about 27751.4352962149. The cubic root of 770142161 is about 916.6220488402.

The spelling of 770142161 in words is "seven hundred seventy million, one hundred forty-two thousand, one hundred sixty-one".