42242122 has 16 divisors (see below), whose sum is σ = 71205120. Its totient is φ = 18648432.

The previous prime is 42242087. The next prime is 42242141. The reversal of 42242122 is 22124224.

It is a self number, because there is not a number n which added to its sum of digits gives 42242122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34722 + ... + 35917.

It is an arithmetic number, because the mean of its divisors is an integer number (4450320).

Almost surely, 2^42242122 is an apocalyptic number.

42242122 is a deficient number, since it is larger than the sum of its proper divisors (28962998).

42242122 is a wasteful number, since it uses less digits than its factorization.

42242122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70677.

The product of its digits is 512, while the sum is 19.

The square root of 42242122 is about 6499.3939717484. The cubic root of 42242122 is about 348.2693394240.

Adding to 42242122 its reverse (22124224), we get a palindrome (64366346).

The spelling of 42242122 in words is "forty-two million, two hundred forty-two thousand, one hundred twenty-two".