42454493 has 4 divisors (see below), whose sum is σ = 44688960. Its totient is φ = 40220028.

The previous prime is 42454471. The next prime is 42454507. The reversal of 42454493 is 39445424.

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 a cyclic number.

It is not a de Polignac number, because 42454493 - 2²⁴ = 25677277 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 (42450493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1117205 + ... + 1117242.

It is an arithmetic number, because the mean of its divisors is an integer number (11172240).

Almost surely, 2^42454493 is an apocalyptic number.

It is an amenable number.

42454493 is a deficient number, since it is larger than the sum of its proper divisors (2234467).

42454493 is a wasteful number, since it uses less digits than its factorization.

42454493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2234466.

The product of its digits is 69120, while the sum is 35.

The square root of 42454493 is about 6515.7112428345. The cubic root of 42454493 is about 348.8520019550.

The spelling of 42454493 in words is "forty-two million, four hundred fifty-four thousand, four hundred ninety-three".