42510393 has 16 divisors (see below), whose sum is σ = 65011200. Its totient is φ = 27425520.

The previous prime is 42510389. The next prime is 42510397. The reversal of 42510393 is 39301524.

It is an interprime number because it is at equal distance from previous prime (42510389) and next prime (42510397).

It is not a de Polignac number, because 42510393 - 2² = 42510389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42510397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24558 + ... + 26231.

It is an arithmetic number, because the mean of its divisors is an integer number (4063200).

Almost surely, 2^42510393 is an apocalyptic number.

It is an amenable number.

42510393 is a deficient number, since it is larger than the sum of its proper divisors (22500807).

42510393 is a wasteful number, since it uses less digits than its factorization.

42510393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50829 (or 50823 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 42510393 is about 6519.9994631902. Note that the first 3 decimals coincide. The cubic root of 42510393 is about 349.0050464100.

The spelling of 42510393 in words is "forty-two million, five hundred ten thousand, three hundred ninety-three".