8142874877 has 2 divisors, whose sum is σ = 8142874878. Its totient is φ = 8142874876.

The previous prime is 8142874853. The next prime is 8142874889. The reversal of 8142874877 is 7784782418.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7594425316 + 548449561 = 87146^2 + 23419^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8142874877 is a prime.

It is a super-2 number, since 2×8142874877² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8142874177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4071437438 + 4071437439.

It is an arithmetic number, because the mean of its divisors is an integer number (4071437439).

Almost surely, 2^8142874877 is an apocalyptic number.

It is an amenable number.

8142874877 is a deficient number, since it is larger than the sum of its proper divisors (1).

8142874877 is an equidigital number, since it uses as much as digits as its factorization.

8142874877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5619712, while the sum is 56.

The square root of 8142874877 is about 90237.8793910850. The cubic root of 8142874877 is about 2011.8360554672.

The spelling of 8142874877 in words is "eight billion, one hundred forty-two million, eight hundred seventy-four thousand, eight hundred seventy-seven".