4021002041431 has 4 divisors (see below), whose sum is σ = 4022030171664. Its totient is φ = 4019973911200.

The previous prime is 4021002041363. The next prime is 4021002041471. The reversal of 4021002041431 is 1341402001204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4021002041431 is a prime.

It is a super-2 number, since 2×4021002041431² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021002041471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 514059250 + ... + 514067071.

It is an arithmetic number, because the mean of its divisors is an integer number (1005507542916).

Almost surely, 2^{4021002041431} is an apocalyptic number.

4021002041431 is a deficient number, since it is larger than the sum of its proper divisors (1028130233).

4021002041431 is a wasteful number, since it uses less digits than its factorization.

4021002041431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028130232.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 4021002041431 its reverse (1341402001204), we get a palindrome (5362404042635).

The spelling of 4021002041431 in words is "four trillion, twenty-one billion, two million, forty-one thousand, four hundred thirty-one".