420245254 has 16 divisors (see below), whose sum is σ = 740572560. Its totient is φ = 176326560.

The previous prime is 420245251. The next prime is 420245291. The reversal of 420245254 is 452542024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420245251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 734409 + ... + 734980.

It is an arithmetic number, because the mean of its divisors is an integer number (46285785).

Almost surely, 2^420245254 is an apocalyptic number.

420245254 is a deficient number, since it is larger than the sum of its proper divisors (320327306).

420245254 is a wasteful number, since it uses less digits than its factorization.

420245254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1469415.

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

The square root of 420245254 is about 20499.8842435756. The cubic root of 420245254 is about 749.0329782871.

Adding to 420245254 its reverse (452542024), we get a palindrome (872787278).

It can be divided in two parts, 42024 and 5254, that added together give a triangular number (47278 = T₃₀₇).

The spelling of 420245254 in words is "four hundred twenty million, two hundred forty-five thousand, two hundred fifty-four".