4021243121400 has 96 divisors (see below), whose sum is σ = 12513252850560. Its totient is φ = 1068254151040.

The previous prime is 4021243121393. The next prime is 4021243121407. The reversal of 4021243121400 is 41213421204.

It is an interprime number because it is at equal distance from previous prime (4021243121393) and next prime (4021243121407).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021243121407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12583782 + ... + 12899381.

It is an arithmetic number, because the mean of its divisors is an integer number (130346383860).

Almost surely, 2^{4021243121400} is an apocalyptic number.

4021243121400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4021243121400 is an abundant number, since it is smaller than the sum of its proper divisors (8492009729160).

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

4021243121400 is a wasteful number, since it uses less digits than its factorization.

4021243121400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25483445 (or 25483436 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 4021243121400 its reverse (41213421204), we get a palindrome (4062456542604).

The spelling of 4021243121400 in words is "four trillion, twenty-one billion, two hundred forty-three million, one hundred twenty-one thousand, four hundred".