420102425 has 24 divisors (see below), whose sum is σ = 536007360. Its totient is φ = 326491200.

The previous prime is 420102409. The next prime is 420102427. The reversal of 420102425 is 524201024.

It is a happy number.

It is not a de Polignac number, because 420102425 - 2⁴ = 420102409 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 420102397 and 420102406.

It is not an unprimeable number, because it can be changed into a prime (420102427) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 124916 + ... + 128234.

It is an arithmetic number, because the mean of its divisors is an integer number (22333640).

Almost surely, 2^420102425 is an apocalyptic number.

It is an amenable number.

420102425 is a deficient number, since it is larger than the sum of its proper divisors (115904935).

420102425 is a wasteful number, since it uses less digits than its factorization.

420102425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3473 (or 3468 counting only the distinct ones).

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

The square root of 420102425 is about 20496.4002937101. The cubic root of 420102425 is about 748.9481105798.

Adding to 420102425 its reverse (524201024), we get a palindrome (944303449).

The spelling of 420102425 in words is "four hundred twenty million, one hundred two thousand, four hundred twenty-five".