4021401033243 has 48 divisors (see below), whose sum is σ = 6567344138880. Its totient is φ = 2430188394480.

The previous prime is 4021401033239. The next prime is 4021401033319. The reversal of 4021401033243 is 3423301041204.

4021401033243 is a `hidden beast` number, since 402 + 1 + 4 + 0 + 10 + 3 + 3 + 243 = 666.

It is not a de Polignac number, because 4021401033243 - 2² = 4021401033239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (4021401033043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 640005 + ... + 2907302.

It is an arithmetic number, because the mean of its divisors is an integer number (136819669560).

Almost surely, 2^{4021401033243} is an apocalyptic number.

4021401033243 is a deficient number, since it is larger than the sum of its proper divisors (2545943105637).

4021401033243 is a wasteful number, since it uses less digits than its factorization.

4021401033243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3547685 (or 3547668 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 4021401033243 its reverse (3423301041204), we get a palindrome (7444702074447).

The spelling of 4021401033243 in words is "four trillion, twenty-one billion, four hundred one million, thirty-three thousand, two hundred forty-three".