425102420 has 24 divisors (see below), whose sum is σ = 895903848. Its totient is φ = 169433600.

The previous prime is 425102383. The next prime is 425102423. The reversal of 425102420 is 24201524.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 214388164 + 210714256 = 14642^2 + 14516^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 425102392 and 425102401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (425102423) 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, 32201 + ... + 43440.

It is an arithmetic number, because the mean of its divisors is an integer number (37329327).

Almost surely, 2^425102420 is an apocalyptic number.

It is an amenable number.

425102420 is an abundant number, since it is smaller than the sum of its proper divisors (470801428).

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

425102420 is a wasteful number, since it uses less digits than its factorization.

425102420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75931 (or 75929 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 425102420 is about 20618.0120283213. The cubic root of 425102420 is about 751.9076887028.

Adding to 425102420 its reverse (24201524), we get a palindrome (449303944).

The spelling of 425102420 in words is "four hundred twenty-five million, one hundred two thousand, four hundred twenty".