42287961 has 8 divisors (see below), whose sum is σ = 58835520. Its totient is φ = 26966192.

The previous prime is 42287957. The next prime is 42287969. The reversal of 42287961 is 16978224.

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 42287961 - 2² = 42287957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42287969) 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, 306366 + ... + 306503.

It is an arithmetic number, because the mean of its divisors is an integer number (7354440).

Almost surely, 2^42287961 is an apocalyptic number.

It is an amenable number.

42287961 is a deficient number, since it is larger than the sum of its proper divisors (16547559).

42287961 is a wasteful number, since it uses less digits than its factorization.

42287961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612895.

The product of its digits is 48384, while the sum is 39.

The square root of 42287961 is about 6502.9194213061. The cubic root of 42287961 is about 348.3952686026.

The spelling of 42287961 in words is "forty-two million, two hundred eighty-seven thousand, nine hundred sixty-one".