42455251 has 8 divisors (see below), whose sum is σ = 43033760. Its totient is φ = 41879808.

The previous prime is 42455227. The next prime is 42455269. The reversal of 42455251 is 15255424.

42455251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42455251 - 2⁵ = 42455219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42455221) 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 in 7 ways as a sum of consecutive naturals, for example, 42085 + ... + 43081.

It is an arithmetic number, because the mean of its divisors is an integer number (5379220).

Almost surely, 2^42455251 is an apocalyptic number.

42455251 is a deficient number, since it is larger than the sum of its proper divisors (578509).

42455251 is an equidigital number, since it uses as much as digits as its factorization.

42455251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533.

The product of its digits is 8000, while the sum is 28.

The square root of 42455251 is about 6515.7694096707. The cubic root of 42455251 is about 348.8540781251.

The spelling of 42455251 in words is "forty-two million, four hundred fifty-five thousand, two hundred fifty-one".