20420035 has 8 divisors (see below), whose sum is σ = 24629616. Its totient is φ = 16252320.

The previous prime is 20420033. The next prime is 20420051. The reversal of 20420035 is 53002402.

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

It is not a de Polignac number, because 20420035 - 2¹ = 20420033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20420033) 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, 9381 + ... + 11350.

It is an arithmetic number, because the mean of its divisors is an integer number (3078702).

Almost surely, 2^20420035 is an apocalyptic number.

20420035 is a deficient number, since it is larger than the sum of its proper divisors (4209581).

20420035 is a wasteful number, since it uses less digits than its factorization.

20420035 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20933.

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 20420035 is about 4518.8532837436. The cubic root of 20420035 is about 273.3288625417.

Adding to 20420035 its reverse (53002402), we get a palindrome (73422437).

The spelling of 20420035 in words is "twenty million, four hundred twenty thousand, thirty-five".