42620242 has 16 divisors (see below), whose sum is σ = 76240512. Its totient is φ = 17471520.

The previous prime is 42620239. The next prime is 42620269. The reversal of 42620242 is 24202624.

It is a plaindrome in base 12.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65859 + ... + 66502.

It is an arithmetic number, because the mean of its divisors is an integer number (4765032).

Almost surely, 2^42620242 is an apocalyptic number.

42620242 is a deficient number, since it is larger than the sum of its proper divisors (33620270).

42620242 is a wasteful number, since it uses less digits than its factorization.

42620242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132393.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 42620242 is about 6528.4180319584. The cubic root of 42620242 is about 349.3054033944.

Adding to 42620242 its reverse (24202624), we get a palindrome (66822866).

The spelling of 42620242 in words is "forty-two million, six hundred twenty thousand, two hundred forty-two".