42455801 has 2 divisors, whose sum is σ = 42455802. Its totient is φ = 42455800.

The previous prime is 42455789. The next prime is 42455807. The reversal of 42455801 is 10855424.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41731600 + 724201 = 6460^2 + 851^2 .

It is a cyclic number.

It is not a de Polignac number, because 42455801 - 2¹⁰ = 42454777 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42455807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21227900 + 21227901.

It is an arithmetic number, because the mean of its divisors is an integer number (21227901).

Almost surely, 2^42455801 is an apocalyptic number.

It is an amenable number.

42455801 is a deficient number, since it is larger than the sum of its proper divisors (1).

42455801 is an equidigital number, since it uses as much as digits as its factorization.

42455801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 42455801 is about 6515.8116148336. The cubic root of 42455801 is about 348.8555845655.

The spelling of 42455801 in words is "forty-two million, four hundred fifty-five thousand, eight hundred one".