421353542100 has 144 divisors (see below), whose sum is σ = 1242820329408. Its totient is φ = 110196034560.

The previous prime is 421353542089. The next prime is 421353542131. The reversal of 421353542100 is 1245353124.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3349542 + ... + 3473058.

It is an arithmetic number, because the mean of its divisors is an integer number (8630696732).

Almost surely, 2^421353542100 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 421353542100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (621410164704).

421353542100 is an abundant number, since it is smaller than the sum of its proper divisors (821466787308).

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

421353542100 is a wasteful number, since it uses less digits than its factorization.

421353542100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123754 (or 123747 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 421353542100 its reverse (1245353124), we get a palindrome (422598895224).

The spelling of 421353542100 in words is "four hundred twenty-one billion, three hundred fifty-three million, five hundred forty-two thousand, one hundred".