771207242 has 8 divisors (see below), whose sum is σ = 1245796356. Its totient is φ = 355941792.

The previous prime is 771207221. The next prime is 771207257. The reversal of 771207242 is 242702177.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 763361641 + 7845601 = 27629^2 + 2801^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×771207242² = 1189521220226493128, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 771207199 and 771207208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14830883 + ... + 14830934.

Almost surely, 2^771207242 is an apocalyptic number.

771207242 is a deficient number, since it is larger than the sum of its proper divisors (474589114).

771207242 is a wasteful number, since it uses less digits than its factorization.

771207242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29661832.

The product of its (nonzero) digits is 10976, while the sum is 32.

The square root of 771207242 is about 27770.6183222484. The cubic root of 771207242 is about 917.0444068024.

The spelling of 771207242 in words is "seven hundred seventy-one million, two hundred seven thousand, two hundred forty-two".