43452630421 has 4 divisors (see below), whose sum is σ = 43453095532. Its totient is φ = 43452165312.

The previous prime is 43452630367. The next prime is 43452630437. The reversal of 43452630421 is 12403625434.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 36133827921 + 7318802500 = 190089^2 + 85550^2 .

It is a cyclic number.

It is not a de Polignac number, because 43452630421 - 2⁷ = 43452630293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43452630121) 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 3 ways as a sum of consecutive naturals, for example, 38370 + ... + 297283.

It is an arithmetic number, because the mean of its divisors is an integer number (10863273883).

Almost surely, 2^43452630421 is an apocalyptic number.

It is an amenable number.

43452630421 is a deficient number, since it is larger than the sum of its proper divisors (465111).

43452630421 is a wasteful number, since it uses less digits than its factorization.

43452630421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 465110.

The product of its (nonzero) digits is 69120, while the sum is 34.

The spelling of 43452630421 in words is "forty-three billion, four hundred fifty-two million, six hundred thirty thousand, four hundred twenty-one".