771234021422 has 4 divisors (see below), whose sum is σ = 1156851032136. Its totient is φ = 385617010710.

The previous prime is 771234021421. The next prime is 771234021427. The reversal of 771234021422 is 224120432177.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (771234021421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 192808505354 + ... + 192808505357.

It is an arithmetic number, because the mean of its divisors is an integer number (289212758034).

Almost surely, 2^771234021422 is an apocalyptic number.

771234021422 is a deficient number, since it is larger than the sum of its proper divisors (385617010714).

771234021422 is a wasteful number, since it uses less digits than its factorization.

771234021422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385617010713.

The product of its (nonzero) digits is 37632, while the sum is 35.

Adding to 771234021422 its reverse (224120432177), we get a palindrome (995354453599).

The spelling of 771234021422 in words is "seven hundred seventy-one billion, two hundred thirty-four million, twenty-one thousand, four hundred twenty-two".