42454452 has 12 divisors (see below), whose sum is σ = 99060416. Its totient is φ = 14151480.

The previous prime is 42454427. The next prime is 42454471. The reversal of 42454452 is 25445424.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1768924 + ... + 1768947.

Almost surely, 2^42454452 is an apocalyptic number.

It is an amenable number.

42454452 is an abundant number, since it is smaller than the sum of its proper divisors (56605964).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42454452 is a wasteful number, since it uses less digits than its factorization.

42454452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3537878 (or 3537876 counting only the distinct ones).

The product of its digits is 25600, while the sum is 30.

The square root of 42454452 is about 6515.7080965924. The cubic root of 42454452 is about 348.8518896548.

Adding to 42454452 its reverse (25445424), we get a palindrome (67899876).

Subtracting from 42454452 its reverse (25445424), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 42454452 in words is "forty-two million, four hundred fifty-four thousand, four hundred fifty-two".