420241646524 has 72 divisors (see below), whose sum is σ = 889336113120. Its totient is φ = 170184212352.

The previous prime is 420241646509. The next prime is 420241646567. The reversal of 420241646524 is 425646142024.

It is a super-2 number, since 2×420241646524² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3878574 + ... + 3985450.

It is an arithmetic number, because the mean of its divisors is an integer number (12351890460).

Almost surely, 2^420241646524 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420241646524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (444668056560).

420241646524 is an abundant number, since it is smaller than the sum of its proper divisors (469094466596).

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

420241646524 is a wasteful number, since it uses less digits than its factorization.

420241646524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107315 (or 107294 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 40.

Adding to 420241646524 its reverse (425646142024), we get a palindrome (845887788548).

The spelling of 420241646524 in words is "four hundred twenty billion, two hundred forty-one million, six hundred forty-six thousand, five hundred twenty-four".