42918482381 has 2 divisors, whose sum is σ = 42918482382. Its totient is φ = 42918482380.

The previous prime is 42918482317. The next prime is 42918482389. The reversal of 42918482381 is 18328481924.

42918482381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42707942281 + 210540100 = 206659^2 + 14510^2 .

It is a cyclic number.

It is not a de Polignac number, because 42918482381 - 2⁶ = 42918482317 is a prime.

It is a super-2 number, since 2×42918482381² (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 (42918482389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21459241190 + 21459241191.

It is an arithmetic number, because the mean of its divisors is an integer number (21459241191).

Almost surely, 2^42918482381 is an apocalyptic number.

It is an amenable number.

42918482381 is a deficient number, since it is larger than the sum of its proper divisors (1).

42918482381 is an equidigital number, since it uses as much as digits as its factorization.

42918482381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 884736, while the sum is 50.

The spelling of 42918482381 in words is "forty-two billion, nine hundred eighteen million, four hundred eighty-two thousand, three hundred eighty-one".