43420140031057 has 2 divisors, whose sum is σ = 43420140031058. Its totient is φ = 43420140031056.

The previous prime is 43420140030887. The next prime is 43420140031129. The reversal of 43420140031057 is 75013004102434.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32290169813136 + 11129970217921 = 5682444^2 + 3336161^2 .

It is a cyclic number.

It is not a de Polignac number, because 43420140031057 - 2¹¹ = 43420140029009 is a prime.

It is not a weakly prime, because it can be changed into another prime (43420140035057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21710070015528 + 21710070015529.

It is an arithmetic number, because the mean of its divisors is an integer number (21710070015529).

Almost surely, 2^{43420140031057} is an apocalyptic number.

It is an amenable number.

43420140031057 is a deficient number, since it is larger than the sum of its proper divisors (1).

43420140031057 is an equidigital number, since it uses as much as digits as its factorization.

43420140031057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 34.

The spelling of 43420140031057 in words is "forty-three trillion, four hundred twenty billion, one hundred forty million, thirty-one thousand, fifty-seven".