1077242891 has 2 divisors, whose sum is σ = 1077242892. Its totient is φ = 1077242890.

The previous prime is 1077242879. The next prime is 1077242939. The reversal of 1077242891 is 1982427701.

It is a weak prime.

It is an emirp because it is prime and its reverse (1982427701) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1077242891 is a prime.

It is not a weakly prime, because it can be changed into another prime (1077242851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 538621445 + 538621446.

It is an arithmetic number, because the mean of its divisors is an integer number (538621446).

Almost surely, 2^1077242891 is an apocalyptic number.

1077242891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1077242891 is an equidigital number, since it uses as much as digits as its factorization.

1077242891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 41.

The square root of 1077242891 is about 32821.3785664161. The cubic root of 1077242891 is about 1025.1117517657. Note that the first 3 decimals are identical.

The spelling of 1077242891 in words is "one billion, seventy-seven million, two hundred forty-two thousand, eight hundred ninety-one".