42055357 has 2 divisors, whose sum is σ = 42055358. Its totient is φ = 42055356.

The previous prime is 42055261. The next prime is 42055367. The reversal of 42055357 is 75355024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37100281 + 4955076 = 6091^2 + 2226^2 .

It is a cyclic number.

It is not a de Polignac number, because 42055357 - 2¹⁹ = 41531069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42055367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21027678 + 21027679.

It is an arithmetic number, because the mean of its divisors is an integer number (21027679).

Almost surely, 2^42055357 is an apocalyptic number.

It is an amenable number.

42055357 is a deficient number, since it is larger than the sum of its proper divisors (1).

42055357 is an equidigital number, since it uses as much as digits as its factorization.

42055357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 42055357 is about 6485.0101773243. The cubic root of 42055357 is about 347.7553136392.

The spelling of 42055357 in words is "forty-two million, fifty-five thousand, three hundred fifty-seven".