42872073877 has 2 divisors, whose sum is σ = 42872073878. Its totient is φ = 42872073876.

The previous prime is 42872073847. The next prime is 42872073889. The reversal of 42872073877 is 77837027824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41521805361 + 1350268516 = 203769^2 + 36746^2 .

It is a cyclic number.

It is not a de Polignac number, because 42872073877 - 2³⁵ = 8512335509 is a prime.

It is a super-2 number, since 2×42872073877² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42872073847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21436036938 + 21436036939.

It is an arithmetic number, because the mean of its divisors is an integer number (21436036939).

Almost surely, 2^42872073877 is an apocalyptic number.

It is an amenable number.

42872073877 is a deficient number, since it is larger than the sum of its proper divisors (1).

42872073877 is an equidigital number, since it uses as much as digits as its factorization.

42872073877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7375872, while the sum is 55.

The spelling of 42872073877 in words is "forty-two billion, eight hundred seventy-two million, seventy-three thousand, eight hundred seventy-seven".