42140932381 has 2 divisors, whose sum is σ = 42140932382. Its totient is φ = 42140932380.

The previous prime is 42140932291. The next prime is 42140932397. The reversal of 42140932381 is 18323904124.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41834157156 + 306775225 = 204534^2 + 17515^2 .

It is a cyclic number.

It is not a de Polignac number, because 42140932381 - 2¹⁵ = 42140899613 is a prime.

It is a super-2 number, since 2×42140932381² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42140932381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42140932781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21070466190 + 21070466191.

It is an arithmetic number, because the mean of its divisors is an integer number (21070466191).

Almost surely, 2^42140932381 is an apocalyptic number.

It is an amenable number.

42140932381 is a deficient number, since it is larger than the sum of its proper divisors (1).

42140932381 is an equidigital number, since it uses as much as digits as its factorization.

42140932381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 37.

The spelling of 42140932381 in words is "forty-two billion, one hundred forty million, nine hundred thirty-two thousand, three hundred eighty-one".