43020400241021 has 16 divisors (see below), whose sum is σ = 50057433907200. Its totient is φ = 36207630557808.

The previous prime is 43020400240997. The next prime is 43020400241047. The reversal of 43020400241021 is 12014200402034.

It is a cyclic number.

It is not a de Polignac number, because 43020400241021 - 2²² = 43020396046717 is a prime.

It is a super-2 number, since 2×43020400241021² (a number of 28 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 (43020400211021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59994461 + ... + 60707298.

It is an arithmetic number, because the mean of its divisors is an integer number (3128589619200).

Almost surely, 2^{43020400241021} is an apocalyptic number.

It is an amenable number.

43020400241021 is a deficient number, since it is larger than the sum of its proper divisors (7037033666179).

43020400241021 is a wasteful number, since it uses less digits than its factorization.

43020400241021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120702688.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 43020400241021 its reverse (12014200402034), we get a palindrome (55034600643055).

The spelling of 43020400241021 in words is "forty-three trillion, twenty billion, four hundred million, two hundred forty-one thousand, twenty-one".