420102520 has 32 divisors (see below), whose sum is σ = 951588000. Its totient is φ = 166910848.

The previous prime is 420102511. The next prime is 420102533. The reversal of 420102520 is 25201024.

It is a super-2 number, since 2×420102520² = 352972254620700800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 420102494 and 420102503.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 29284 + ... + 41203.

It is an arithmetic number, because the mean of its divisors is an integer number (29737125).

Almost surely, 2^420102520 is an apocalyptic number.

420102520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420102520 is an abundant number, since it is smaller than the sum of its proper divisors (531485480).

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

420102520 is a wasteful number, since it uses less digits than its factorization.

420102520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70647 (or 70643 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 420102520 is about 20496.4026111901. The cubic root of 420102520 is about 748.9481670343.

Adding to 420102520 its reverse (25201024), we get a palindrome (445303544).

The spelling of 420102520 in words is "four hundred twenty million, one hundred two thousand, five hundred twenty".