420525426 has 32 divisors (see below), whose sum is σ = 859336128. Its totient is φ = 137142720.

The previous prime is 420525421. The next prime is 420525431. The reversal of 420525426 is 624525024.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (420525421) and next prime (420525431).

It is a junction number, because it is equal to n+sod(n) for n = 420525393 and 420525402.

It is not an unprimeable number, because it can be changed into a prime (420525421) 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 15 ways as a sum of consecutive naturals, for example, 124581 + ... + 127911.

It is an arithmetic number, because the mean of its divisors is an integer number (26854254).

Almost surely, 2^420525426 is an apocalyptic number.

420525426 is an abundant number, since it is smaller than the sum of its proper divisors (438810702).

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

420525426 is a wasteful number, since it uses less digits than its factorization.

420525426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3786.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 420525426 is about 20506.7166070046. The cubic root of 420525426 is about 749.1993981307.

The spelling of 420525426 in words is "four hundred twenty million, five hundred twenty-five thousand, four hundred twenty-six".