42797057 has 2 divisors, whose sum is σ = 42797058. Its totient is φ = 42797056.

The previous prime is 42797047. The next prime is 42797087. The reversal of 42797057 is 75079724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41460721 + 1336336 = 6439^2 + 1156^2 .

It is a cyclic number.

It is not a de Polignac number, because 42797057 - 2⁶ = 42796993 is a prime.

It is a super-2 number, since 2×42797057² = 3663176175722498, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42797017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21398528 + 21398529.

It is an arithmetic number, because the mean of its divisors is an integer number (21398529).

Almost surely, 2^42797057 is an apocalyptic number.

It is an amenable number.

42797057 is a deficient number, since it is larger than the sum of its proper divisors (1).

42797057 is an equidigital number, since it uses as much as digits as its factorization.

42797057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 123480, while the sum is 41.

The square root of 42797057 is about 6541.9459643137. The cubic root of 42797057 is about 349.7877815539.

The spelling of 42797057 in words is "forty-two million, seven hundred ninety-seven thousand, fifty-seven".