771451142 has 64 divisors (see below), whose sum is σ = 1512152064. Its totient is φ = 286218240.

The previous prime is 771451111. The next prime is 771451159. The reversal of 771451142 is 241154177.

It is a junction number, because it is equal to n+sod(n) for n = 771451099 and 771451108.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 1250018 + ... + 1250634.

It is an arithmetic number, because the mean of its divisors is an integer number (23627376).

Almost surely, 2^771451142 is an apocalyptic number.

771451142 is a deficient number, since it is larger than the sum of its proper divisors (740700922).

771451142 is a wasteful number, since it uses less digits than its factorization.

771451142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013.

The product of its digits is 7840, while the sum is 32.

The square root of 771451142 is about 27775.0093069291. The cubic root of 771451142 is about 917.1410706406.

It can be divided in two parts, 77145 and 1142, that added together give a palindrome (78287).

The spelling of 771451142 in words is "seven hundred seventy-one million, four hundred fifty-one thousand, one hundred forty-two".