77122141 has 4 divisors (see below), whose sum is σ = 79609984. Its totient is φ = 74634300.

The previous prime is 77122139. The next prime is 77122163. The reversal of 77122141 is 14122177.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 77122141 - 2¹ = 77122139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77122181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1243875 + ... + 1243936.

It is an arithmetic number, because the mean of its divisors is an integer number (19902496).

Almost surely, 2^77122141 is an apocalyptic number.

It is an amenable number.

77122141 is a deficient number, since it is larger than the sum of its proper divisors (2487843).

77122141 is a wasteful number, since it uses less digits than its factorization.

77122141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2487842.

The product of its digits is 784, while the sum is 25.

The square root of 77122141 is about 8781.9212590412. The cubic root of 77122141 is about 425.6569144312.

The spelling of 77122141 in words is "seventy-seven million, one hundred twenty-two thousand, one hundred forty-one".