420320521250 has 160 divisors (see below), whose sum is σ = 913768200576. Its totient is φ = 141984000000.

The previous prime is 420320521241. The next prime is 420320521259. The reversal of 420320521250 is 52125023024.

It is an interprime number because it is at equal distance from previous prime (420320521241) and next prime (420320521259).

It is not an unprimeable number, because it can be changed into a prime (420320521259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 213035264 + ... + 213037236.

Almost surely, 2^420320521250 is an apocalyptic number.

420320521250 is an abundant number, since it is smaller than the sum of its proper divisors (493447679326).

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

420320521250 is a wasteful number, since it uses less digits than its factorization.

420320521250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2350 (or 2335 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

Adding to 420320521250 its reverse (52125023024), we get a palindrome (472445544274).

The spelling of 420320521250 in words is "four hundred twenty billion, three hundred twenty million, five hundred twenty-one thousand, two hundred fifty".