42214429 has 4 divisors (see below), whose sum is σ = 42267420. Its totient is φ = 42161440.

The previous prime is 42214423. The next prime is 42214457. The reversal of 42214429 is 92441224.

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 20340100 + 21874329 = 4510^2 + 4677^2 .

It is a cyclic number.

It is not a de Polignac number, because 42214429 - 2³ = 42214421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42214397 and 42214406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42214421) 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, 25282 + ... + 26899.

It is an arithmetic number, because the mean of its divisors is an integer number (10566855).

Almost surely, 2^42214429 is an apocalyptic number.

It is an amenable number.

42214429 is a deficient number, since it is larger than the sum of its proper divisors (52991).

42214429 is an equidigital number, since it uses as much as digits as its factorization.

42214429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52990.

The product of its digits is 4608, while the sum is 28.

The square root of 42214429 is about 6497.2631930683. The cubic root of 42214429 is about 348.1932168973.

The spelling of 42214429 in words is "forty-two million, two hundred fourteen thousand, four hundred twenty-nine".