421033134531500 has 96 divisors (see below), whose sum is σ = 931258483733760. Its totient is φ = 166266723168000.

The previous prime is 421033134531487. The next prime is 421033134531523. The reversal of 421033134531500 is 5135431330124.

It is a super-5 number, since 5×421033134531500⁵ (a number of 74 digits) contains 55555 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 451295510 + ... + 452227490.

It is an arithmetic number, because the mean of its divisors is an integer number (9700609205560).

Almost surely, 2^{421033134531500} 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 421033134531500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (465629241866880).

421033134531500 is an abundant number, since it is smaller than the sum of its proper divisors (510225349202260).

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

421033134531500 is a wasteful number, since it uses less digits than its factorization.

421033134531500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943516 (or 943504 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 35.

Adding to 421033134531500 its reverse (5135431330124), we get a palindrome (426168565861624).

The spelling of 421033134531500 in words is "four hundred twenty-one trillion, thirty-three billion, one hundred thirty-four million, five hundred thirty-one thousand, five hundred".