42455663 has 8 divisors (see below), whose sum is σ = 43581648. Its totient is φ = 41336064.

The previous prime is 42455641. The next prime is 42455669. The reversal of 42455663 is 36655424.

It is a happy number.

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 42455663 - 2⁶ = 42455599 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42455669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13781 + ... + 16577.

It is an arithmetic number, because the mean of its divisors is an integer number (5447706).

Almost surely, 2^42455663 is an apocalyptic number.

42455663 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

42455663 is a deficient number, since it is larger than the sum of its proper divisors (1125985).

42455663 is a wasteful number, since it uses less digits than its factorization.

42455663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193.

The product of its digits is 86400, while the sum is 35.

The square root of 42455663 is about 6515.8010252002. The cubic root of 42455663 is about 348.8552065871.

The spelling of 42455663 in words is "forty-two million, four hundred fifty-five thousand, six hundred sixty-three".