420454544 has 10 divisors (see below), whose sum is σ = 814630710. Its totient is φ = 210227264.

The previous prime is 420454537. The next prime is 420454571. The reversal of 420454544 is 445454024.

It can be written as a sum of positive squares in only one way, i.e., 419430400 + 1024144 = 20480^2 + 1012^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 420454544.

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 as a sum of consecutive naturals, namely, 13139189 + ... + 13139220.

It is an arithmetic number, because the mean of its divisors is an integer number (81463071).

Almost surely, 2^420454544 is an apocalyptic number.

It is an amenable number.

420454544 is a deficient number, since it is larger than the sum of its proper divisors (394176166).

420454544 is a wasteful number, since it uses less digits than its factorization.

420454544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26278417 (or 26278411 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 32.

The square root of 420454544 is about 20504.9882711500. The cubic root of 420454544 is about 749.1573017972.

The spelling of 420454544 in words is "four hundred twenty million, four hundred fifty-four thousand, five hundred forty-four".