42493493 has 4 divisors (see below), whose sum is σ = 48564000. Its totient is φ = 36422988.

The previous prime is 42493457. The next prime is 42493513. The reversal of 42493493 is 39439424.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 42493493 - 2⁸ = 42493237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42493453) 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 3 ways as a sum of consecutive naturals, for example, 3035243 + ... + 3035256.

It is an arithmetic number, because the mean of its divisors is an integer number (12141000).

Almost surely, 2^42493493 is an apocalyptic number.

It is an amenable number.

42493493 is a deficient number, since it is larger than the sum of its proper divisors (6070507).

42493493 is an equidigital number, since it uses as much as digits as its factorization.

42493493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6070506.

The product of its digits is 93312, while the sum is 38.

The square root of 42493493 is about 6518.7033219805. The cubic root of 42493493 is about 348.9587913129.

The spelling of 42493493 in words is "forty-two million, four hundred ninety-three thousand, four hundred ninety-three".