42816429 has 12 divisors (see below), whose sum is σ = 62025756. Its totient is φ = 28461312.

The previous prime is 42816419. The next prime is 42816439. The reversal of 42816429 is 92461824.

42816429 is a `hidden beast` number, since 4 + 2 + 8 + 1 + 642 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (42816419) and next prime (42816439).

It can be written as a sum of positive squares in 2 ways, for example, as 23474025 + 19342404 = 4845^2 + 4398^2 .

It is a de Polignac number, because none of the positive numbers 2^k-42816429 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 42816393 and 42816402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42816419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3562 + ... + 9915.

It is an arithmetic number, because the mean of its divisors is an integer number (5168813).

Almost surely, 2^42816429 is an apocalyptic number.

It is an amenable number.

42816429 is a deficient number, since it is larger than the sum of its proper divisors (19209327).

42816429 is a wasteful number, since it uses less digits than its factorization.

42816429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13836 (or 13833 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 42816429 is about 6543.4263960100. The cubic root of 42816429 is about 349.8405504999.

The spelling of 42816429 in words is "forty-two million, eight hundred sixteen thousand, four hundred twenty-nine".