42702531 has 8 divisors (see below), whose sum is σ = 58773504. Its totient is φ = 27549960.

The previous prime is 42702509. The next prime is 42702533. The reversal of 42702531 is 13520724.

42702531 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 not a de Polignac number, because 42702531 - 2¹⁹ = 42178243 is a prime.

It is a super-2 number, since 2×42702531² = 3647012307611922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42702533) 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, 229491 + ... + 229676.

It is an arithmetic number, because the mean of its divisors is an integer number (7346688).

Almost surely, 2^42702531 is an apocalyptic number.

42702531 is a deficient number, since it is larger than the sum of its proper divisors (16070973).

42702531 is a wasteful number, since it uses less digits than its factorization.

42702531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459201.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 42702531 is about 6534.7173619063. The cubic root of 42702531 is about 349.5300659152.

The spelling of 42702531 in words is "forty-two million, seven hundred two thousand, five hundred thirty-one".