42454520 has 16 divisors (see below), whose sum is σ = 95522760. Its totient is φ = 16981792.

The previous prime is 42454507. The next prime is 42454523. The reversal of 42454520 is 2545424.

It is a self number, because there is not a number n which added to its sum of digits gives 42454520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42454523) 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, 530642 + ... + 530721.

Almost surely, 2^42454520 is an apocalyptic number.

42454520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42454520 is an abundant number, since it is smaller than the sum of its proper divisors (53068240).

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

42454520 is a wasteful number, since it uses less digits than its factorization.

42454520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061374 (or 1061370 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 26.

The square root of 42454520 is about 6515.7133147492. The cubic root of 42454520 is about 348.8520759087.

Adding to 42454520 its reverse (2545424), we get a palindrome (44999944).

The spelling of 42454520 in words is "forty-two million, four hundred fifty-four thousand, five hundred twenty".