42130943893 has 2 divisors, whose sum is σ = 42130943894. Its totient is φ = 42130943892.

The previous prime is 42130943879. The next prime is 42130944019. The reversal of 42130943893 is 39834903124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41345935569 + 785008324 = 203337^2 + 28018^2 .

It is a cyclic number.

It is not a de Polignac number, because 42130943893 - 2¹³ = 42130935701 is a prime.

It is a super-2 number, since 2×42130943893² (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 (42130943863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21065471946 + 21065471947.

It is an arithmetic number, because the mean of its divisors is an integer number (21065471947).

Almost surely, 2^42130943893 is an apocalyptic number.

It is an amenable number.

42130943893 is a deficient number, since it is larger than the sum of its proper divisors (1).

42130943893 is an equidigital number, since it uses as much as digits as its factorization.

42130943893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 42130943893 in words is "forty-two billion, one hundred thirty million, nine hundred forty-three thousand, eight hundred ninety-three".