771143242 has 16 divisors (see below), whose sum is σ = 1168749000. Its totient is φ = 381579520.

The previous prime is 771143231. The next prime is 771143251. The reversal of 771143242 is 242341177.

It can be written as a sum of positive squares in 4 ways, for example, as 440958001 + 330185241 = 20999^2 + 18171^2 .

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, 79134 + ... + 88342.

Almost surely, 2^771143242 is an apocalyptic number.

771143242 is a deficient number, since it is larger than the sum of its proper divisors (397605758).

771143242 is a wasteful number, since it uses less digits than its factorization.

771143242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9641.

The product of its digits is 9408, while the sum is 31.

The square root of 771143242 is about 27769.4660013476. The cubic root of 771143242 is about 917.0190385821.

The spelling of 771143242 in words is "seven hundred seventy-one million, one hundred forty-three thousand, two hundred forty-two".