420145454 has 8 divisors (see below), whose sum is σ = 630390600. Its totient is φ = 210015256.

The previous prime is 420145421. The next prime is 420145477. The reversal of 420145454 is 454541024.

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

It is a super-2 number, since 2×420145454² = 353044405033732232, which contains 22 as substring.

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, 18929 + ... + 34620.

It is an arithmetic number, because the mean of its divisors is an integer number (78798825).

Almost surely, 2^420145454 is an apocalyptic number.

420145454 is a deficient number, since it is larger than the sum of its proper divisors (210245146).

420145454 is a wasteful number, since it uses less digits than its factorization.

420145454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57474.

The product of its (nonzero) digits is 12800, while the sum is 29.

The square root of 420145454 is about 20497.4499389558. The cubic root of 420145454 is about 748.9736800490.

Adding to 420145454 its reverse (454541024), we get a palindrome (874686478).

The spelling of 420145454 in words is "four hundred twenty million, one hundred forty-five thousand, four hundred fifty-four".