4021430342429 has 4 divisors (see below), whose sum is σ = 4021442798076. Its totient is φ = 4021417886784.

The previous prime is 4021430342407. The next prime is 4021430342513. The reversal of 4021430342429 is 9242430341204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3897473536804 + 123956805625 = 1974202^2 + 352075^2 .

It is a cyclic number.

It is not a de Polignac number, because 4021430342429 - 2¹² = 4021430338333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4021430342392 and 4021430342401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4021430342129) 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, 5730284 + ... + 6393669.

It is an arithmetic number, because the mean of its divisors is an integer number (1005360699519).

Almost surely, 2^{4021430342429} is an apocalyptic number.

It is an amenable number.

4021430342429 is a deficient number, since it is larger than the sum of its proper divisors (12455647).

4021430342429 is a wasteful number, since it uses less digits than its factorization.

4021430342429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12455646.

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 4021430342429 in words is "four trillion, twenty-one billion, four hundred thirty million, three hundred forty-two thousand, four hundred twenty-nine".