1040042477 has 2 divisors, whose sum is σ = 1040042478. Its totient is φ = 1040042476.

The previous prime is 1040042417. The next prime is 1040042503. The reversal of 1040042477 is 7742400401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 997675396 + 42367081 = 31586^2 + 6509^2 .

It is an emirp because it is prime and its reverse (7742400401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1040042477 - 2⁶ = 1040042413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1040042417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520021238 + 520021239.

It is an arithmetic number, because the mean of its divisors is an integer number (520021239).

Almost surely, 2^1040042477 is an apocalyptic number.

It is an amenable number.

1040042477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040042477 is an equidigital number, since it uses as much as digits as its factorization.

1040042477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 1040042477 is about 32249.6895643974. The cubic root of 1040042477 is about 1013.1731972132.

Adding to 1040042477 its reverse (7742400401), we get a palindrome (8782442878).

The spelling of 1040042477 in words is "one billion, forty million, forty-two thousand, four hundred seventy-seven".