842638429 has 8 divisors (see below), whose sum is σ = 887265440. Its totient is φ = 798039216.

The previous prime is 842638427. The next prime is 842638451. The reversal of 842638429 is 924836248.

842638429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 842638429 - 2¹ = 842638427 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 (842638421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90307 + ... + 99199.

It is an arithmetic number, because the mean of its divisors is an integer number (110908180).

Almost surely, 2^842638429 is an apocalyptic number.

It is an amenable number.

842638429 is a deficient number, since it is larger than the sum of its proper divisors (44627011).

842638429 is a wasteful number, since it uses less digits than its factorization.

842638429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13899.

The product of its digits is 663552, while the sum is 46.

The square root of 842638429 is about 29028.2350307421. The cubic root of 842638429 is about 944.5256445582.

The spelling of 842638429 in words is "eight hundred forty-two million, six hundred thirty-eight thousand, four hundred twenty-nine".