771736142 has 4 divisors (see below), whose sum is σ = 1157604216. Its totient is φ = 385868070.

The previous prime is 771736117. The next prime is 771736157. The reversal of 771736142 is 241637177.

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

It is a junction number, because it is equal to n+sod(n) for n = 771736096 and 771736105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192934034 + ... + 192934037.

It is an arithmetic number, because the mean of its divisors is an integer number (289401054).

Almost surely, 2^771736142 is an apocalyptic number.

771736142 is a deficient number, since it is larger than the sum of its proper divisors (385868074).

771736142 is a wasteful number, since it uses less digits than its factorization.

771736142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385868073.

The product of its digits is 49392, while the sum is 38.

The square root of 771736142 is about 27780.1393445029. The cubic root of 771736142 is about 917.2539976554.

The spelling of 771736142 in words is "seven hundred seventy-one million, seven hundred thirty-six thousand, one hundred forty-two".