43421321002 has 8 divisors (see below), whose sum is σ = 65137471812. Its totient is φ = 21708830400.

The previous prime is 43421320997. The next prime is 43421321003. The reversal of 43421321002 is 20012312434.

It can be written as a sum of positive squares in 2 ways, for example, as 43268576121 + 152744881 = 208011^2 + 12359^2 .

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

It is a super-2 number, since 2×43421321002² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43421321003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 885199 + ... + 932962.

Almost surely, 2^43421321002 is an apocalyptic number.

43421321002 is a deficient number, since it is larger than the sum of its proper divisors (21716150810).

43421321002 is a wasteful number, since it uses less digits than its factorization.

43421321002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830104.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 43421321002 its reverse (20012312434), we get a palindrome (63433633436).

The spelling of 43421321002 in words is "forty-three billion, four hundred twenty-one million, three hundred twenty-one thousand, two".