42380057 has 2 divisors, whose sum is σ = 42380058. Its totient is φ = 42380056.

The previous prime is 42380029. The next prime is 42380081. The reversal of 42380057 is 75008324.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28955161 + 13424896 = 5381^2 + 3664^2 .

It is a cyclic number.

It is not a de Polignac number, because 42380057 - 2¹² = 42375961 is a prime.

It is not a weakly prime, because it can be changed into another prime (42380087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21190028 + 21190029.

It is an arithmetic number, because the mean of its divisors is an integer number (21190029).

Almost surely, 2^42380057 is an apocalyptic number.

It is an amenable number.

42380057 is a deficient number, since it is larger than the sum of its proper divisors (1).

42380057 is an equidigital number, since it uses as much as digits as its factorization.

42380057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 42380057 is about 6509.9966973878. The cubic root of 42380057 is about 348.6480004720.

The spelling of 42380057 in words is "forty-two million, three hundred eighty thousand, fifty-seven".