42646533 has 8 divisors (see below), whose sum is σ = 58399008. Its totient is φ = 27662544.

The previous prime is 42646529. The next prime is 42646537. The reversal of 42646533 is 33564624.

It is an interprime number because it is at equal distance from previous prime (42646529) and next prime (42646537).

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

It is not a de Polignac number, because 42646533 - 2² = 42646529 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 42646494 and 42646503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42646537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 191991 + ... + 192212.

It is an arithmetic number, because the mean of its divisors is an integer number (7299876).

Almost surely, 2^42646533 is an apocalyptic number.

It is an amenable number.

42646533 is a deficient number, since it is larger than the sum of its proper divisors (15752475).

42646533 is a wasteful number, since it uses less digits than its factorization.

42646533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384243.

The product of its digits is 51840, while the sum is 33.

The square root of 42646533 is about 6530.4313027548. The cubic root of 42646533 is about 349.3772135659.

The spelling of 42646533 in words is "forty-two million, six hundred forty-six thousand, five hundred thirty-three".