420540454 has 8 divisors (see below), whose sum is σ = 630897840. Its totient is φ = 210241176.

The previous prime is 420540401. The next prime is 420540481. The reversal of 420540454 is 454045024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×420540454⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

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, 19647 + ... + 35029.

It is an arithmetic number, because the mean of its divisors is an integer number (78862230).

Almost surely, 2^420540454 is an apocalyptic number.

420540454 is a deficient number, since it is larger than the sum of its proper divisors (210357386).

420540454 is a wasteful number, since it uses less digits than its factorization.

420540454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29054.

The product of its (nonzero) digits is 12800, while the sum is 28.

The square root of 420540454 is about 20507.0830202640. The cubic root of 420540454 is about 749.2083225490.

Adding to 420540454 its reverse (454045024), we get a palindrome (874585478).

The spelling of 420540454 in words is "four hundred twenty million, five hundred forty thousand, four hundred fifty-four".