42156655253 has 2 divisors, whose sum is σ = 42156655254. Its totient is φ = 42156655252.

The previous prime is 42156655241. The next prime is 42156655259. The reversal of 42156655253 is 35255665124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32327320804 + 9829334449 = 179798^2 + 99143^2 .

It is a cyclic number.

It is not a de Polignac number, because 42156655253 - 2²⁴ = 42139878037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42156655259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21078327626 + 21078327627.

It is an arithmetic number, because the mean of its divisors is an integer number (21078327627).

Almost surely, 2^42156655253 is an apocalyptic number.

It is an amenable number.

42156655253 is a deficient number, since it is larger than the sum of its proper divisors (1).

42156655253 is an equidigital number, since it uses as much as digits as its factorization.

42156655253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1080000, while the sum is 44.

The spelling of 42156655253 in words is "forty-two billion, one hundred fifty-six million, six hundred fifty-five thousand, two hundred fifty-three".