1123620077 has 2 divisors, whose sum is σ = 1123620078. Its totient is φ = 1123620076.

The previous prime is 1123620073. The next prime is 1123620089. The reversal of 1123620077 is 7700263211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 930799081 + 192820996 = 30509^2 + 13886^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123620077 - 2² = 1123620073 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123620073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561810038 + 561810039.

It is an arithmetic number, because the mean of its divisors is an integer number (561810039).

Almost surely, 2^1123620077 is an apocalyptic number.

It is an amenable number.

1123620077 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123620077 is an equidigital number, since it uses as much as digits as its factorization.

1123620077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 1123620077 is about 33520.4426730913. The cubic root of 1123620077 is about 1039.6164996888.

Adding to 1123620077 its reverse (7700263211), we get a palindrome (8823883288).

It can be divided in two parts, 11236 and 20077, that added together give a palindrome (31313).

The spelling of 1123620077 in words is "one billion, one hundred twenty-three million, six hundred twenty thousand, seventy-seven".