1115420477 has 2 divisors, whose sum is σ = 1115420478. Its totient is φ = 1115420476.

The previous prime is 1115420413. The next prime is 1115420491. The reversal of 1115420477 is 7740245111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1068374596 + 47045881 = 32686^2 + 6859^2 .

It is an emirp because it is prime and its reverse (7740245111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1115420477 - 2⁶ = 1115420413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1115420377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557710238 + 557710239.

It is an arithmetic number, because the mean of its divisors is an integer number (557710239).

Almost surely, 2^1115420477 is an apocalyptic number.

It is an amenable number.

1115420477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115420477 is an equidigital number, since it uses as much as digits as its factorization.

1115420477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 1115420477 is about 33397.9112670239. The cubic root of 1115420477 is about 1037.0814614503.

Adding to 1115420477 its reverse (7740245111), we get a palindrome (8855665588).

The spelling of 1115420477 in words is "one billion, one hundred fifteen million, four hundred twenty thousand, four hundred seventy-seven".