4240421232021 has 32 divisors (see below), whose sum is σ = 6770443384320. Its totient is φ = 2607523244352.

The previous prime is 4240421231927. The next prime is 4240421232109. The reversal of 4240421232021 is 1202321240424.

It is a happy number.

4240421232021 is a `hidden beast` number, since 4 + 2 + 4 + 0 + 421 + 232 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 4240421232021 - 2²³ = 4240412843413 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4240421212021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4086210 + ... + 5017763.

It is an arithmetic number, because the mean of its divisors is an integer number (211576355760).

Almost surely, 2^{4240421232021} is an apocalyptic number.

It is an amenable number.

4240421232021 is a deficient number, since it is larger than the sum of its proper divisors (2530022152299).

4240421232021 is a wasteful number, since it uses less digits than its factorization.

4240421232021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9105322 (or 9105316 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 4240421232021 its reverse (1202321240424), we get a palindrome (5442742472445).

The spelling of 4240421232021 in words is "four trillion, two hundred forty billion, four hundred twenty-one million, two hundred thirty-two thousand, twenty-one".