40402430429 has 4 divisors (see below), whose sum is σ = 40402878300. Its totient is φ = 40401982560.

The previous prime is 40402430377. The next prime is 40402430447. The reversal of 40402430429 is 92403420404.

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 35989884100 + 4412546329 = 189710^2 + 66427^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40402430429 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40402430395 and 40402430404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40402430459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36104 + ... + 286545.

It is an arithmetic number, because the mean of its divisors is an integer number (10100719575).

Almost surely, 2^40402430429 is an apocalyptic number.

It is an amenable number.

40402430429 is a deficient number, since it is larger than the sum of its proper divisors (447871).

40402430429 is a wasteful number, since it uses less digits than its factorization.

40402430429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447870.

The product of its (nonzero) digits is 27648, while the sum is 32.

The spelling of 40402430429 in words is "forty billion, four hundred two million, four hundred thirty thousand, four hundred twenty-nine".