43402203021 has 8 divisors (see below), whose sum is σ = 58238200864. Its totient is φ = 28750503600.

The previous prime is 43402203017. The next prime is 43402203029. The reversal of 43402203021 is 12030220434.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43402203021 - 2² = 43402203017 is a prime.

It is a super-2 number, since 2×43402203021² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43402203029) 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 7 ways as a sum of consecutive naturals, for example, 46074055 + ... + 46074996.

It is an arithmetic number, because the mean of its divisors is an integer number (7279775108).

Almost surely, 2^43402203021 is an apocalyptic number.

It is an amenable number.

43402203021 is a deficient number, since it is larger than the sum of its proper divisors (14835997843).

43402203021 is a wasteful number, since it uses less digits than its factorization.

43402203021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92149211.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 43402203021 its reverse (12030220434), we get a palindrome (55432423455).

The spelling of 43402203021 in words is "forty-three billion, four hundred two million, two hundred three thousand, twenty-one".