42646287 has 8 divisors (see below), whose sum is σ = 56921904. Its totient is φ = 28400768.

The previous prime is 42646267. The next prime is 42646349. The reversal of 42646287 is 78264624.

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 42646287 - 2⁸ = 42646031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42646267) 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, 3978 + ... + 10055.

It is an arithmetic number, because the mean of its divisors is an integer number (7115238).

Almost surely, 2^42646287 is an apocalyptic number.

42646287 is a deficient number, since it is larger than the sum of its proper divisors (14275617).

42646287 is a wasteful number, since it uses less digits than its factorization.

42646287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15049.

The product of its digits is 129024, while the sum is 39.

The square root of 42646287 is about 6530.4124678308. The cubic root of 42646287 is about 349.3765417883.

The spelling of 42646287 in words is "forty-two million, six hundred forty-six thousand, two hundred eighty-seven".