42351247 has 8 divisors (see below), whose sum is σ = 44640000. Its totient is φ = 40068504.

The previous prime is 42351227. The next prime is 42351251. The reversal of 42351247 is 74215324.

42351247 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 a de Polignac number, because none of the positive numbers 2^k-42351247 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 (42351227) 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, 27504 + ... + 29002.

It is an arithmetic number, because the mean of its divisors is an integer number (5580000).

Almost surely, 2^42351247 is an apocalyptic number.

42351247 is a deficient number, since it is larger than the sum of its proper divisors (2288753).

42351247 is a wasteful number, since it uses less digits than its factorization.

42351247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3005.

The product of its digits is 6720, while the sum is 28.

The square root of 42351247 is about 6507.7835704639. The cubic root of 42351247 is about 348.5689788239.

The spelling of 42351247 in words is "forty-two million, three hundred fifty-one thousand, two hundred forty-seven".