42457357 has 2 divisors, whose sum is σ = 42457358. Its totient is φ = 42457356.

The previous prime is 42457339. The next prime is 42457417. The reversal of 42457357 is 75375424.

It is a happy number.

42457357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26409321 + 16048036 = 5139^2 + 4006^2 .

It is a cyclic number.

It is not a de Polignac number, because 42457357 - 2¹⁵ = 42424589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42457307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21228678 + 21228679.

It is an arithmetic number, because the mean of its divisors is an integer number (21228679).

Almost surely, 2^42457357 is an apocalyptic number.

It is an amenable number.

42457357 is a deficient number, since it is larger than the sum of its proper divisors (1).

42457357 is an equidigital number, since it uses as much as digits as its factorization.

42457357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 37.

The square root of 42457357 is about 6515.9310155955. The cubic root of 42457357 is about 348.8598463518.

The spelling of 42457357 in words is "forty-two million, four hundred fifty-seven thousand, three hundred fifty-seven".