42020242 has 16 divisors (see below), whose sum is σ = 69444864. Its totient is φ = 18910000.

The previous prime is 42020233. The next prime is 42020249. The reversal of 42020242 is 24202024.

It is not an unprimeable number, because it can be changed into a prime (42020249) 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, 7234 + ... + 11677.

It is an arithmetic number, because the mean of its divisors is an integer number (4340304).

Almost surely, 2^42020242 is an apocalyptic number.

42020242 is a deficient number, since it is larger than the sum of its proper divisors (27424622).

42020242 is a wasteful number, since it uses less digits than its factorization.

42020242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19025.

The product of its (nonzero) digits is 256, while the sum is 16.

The square root of 42020242 is about 6482.3022144914. The cubic root of 42020242 is about 347.6584981638.

Adding to 42020242 its reverse (24202024), we get a palindrome (66222266).

It can be divided in two parts, 4202024 and 2, that multiplied together give a palindrome (8404048).

The spelling of 42020242 in words is "forty-two million, twenty thousand, two hundred forty-two".