1000421233400 has 72 divisors (see below), whose sum is σ = 2361215747520. Its totient is φ = 394195475520.

The previous prime is 1000421233393. The next prime is 1000421233439. The reversal of 1000421233400 is 43321240001.

1000421233400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 340649 + ... + 1454951.

It is an arithmetic number, because the mean of its divisors is an integer number (32794663160).

Almost surely, 2^{1000421233400} is an apocalyptic number.

1000421233400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000421233400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1180607873760).

1000421233400 is an abundant number, since it is smaller than the sum of its proper divisors (1360794514120).

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

1000421233400 is a wasteful number, since it uses less digits than its factorization.

1000421233400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114453 (or 1114377 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 1000421233400 its reverse (43321240001), we get a palindrome (1043742473401).

The spelling of 1000421233400 in words is "one trillion, four hundred twenty-one million, two hundred thirty-three thousand, four hundred".