43120021431252 has 48 divisors (see below), whose sum is σ = 100728443746112. Its totient is φ = 14356909670400.

The previous prime is 43120021431229. The next prime is 43120021431313. The reversal of 43120021431252 is 25213412002134.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53902548 + ... + 54696660.

Almost surely, 2^{43120021431252} is an apocalyptic number.

It is an amenable number.

43120021431252 is an abundant number, since it is smaller than the sum of its proper divisors (57608422314860).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43120021431252 is a wasteful number, since it uses less digits than its factorization.

43120021431252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799288 (or 799286 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 43120021431252 its reverse (25213412002134), we get a palindrome (68333433433386).

The spelling of 43120021431252 in words is "forty-three trillion, one hundred twenty billion, twenty-one million, four hundred thirty-one thousand, two hundred fifty-two".