42156655241 has 2 divisors, whose sum is σ = 42156655242. Its totient is φ = 42156655240.

The previous prime is 42156655181. The next prime is 42156655253. The reversal of 42156655241 is 14255665124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24994345216 + 17162310025 = 158096^2 + 131005^2 .

It is a cyclic number.

It is not a de Polignac number, because 42156655241 - 2¹⁴ = 42156638857 is a prime.

It is a super-2 number, since 2×42156655241² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42156655271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21078327620 + 21078327621.

It is an arithmetic number, because the mean of its divisors is an integer number (21078327621).

Almost surely, 2^42156655241 is an apocalyptic number.

It is an amenable number.

42156655241 is a deficient number, since it is larger than the sum of its proper divisors (1).

42156655241 is an equidigital number, since it uses as much as digits as its factorization.

42156655241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288000, while the sum is 41.

The spelling of 42156655241 in words is "forty-two billion, one hundred fifty-six million, six hundred fifty-five thousand, two hundred forty-one".