42455122 has 4 divisors (see below), whose sum is σ = 63682686. Its totient is φ = 21227560.

The previous prime is 42455113. The next prime is 42455123. The reversal of 42455122 is 22155424.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 42393121 + 62001 = 6511^2 + 249^2 .

It is not an unprimeable number, because it can be changed into a prime (42455123) by changing a digit.

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 as a sum of consecutive naturals, namely, 10613779 + ... + 10613782.

Almost surely, 2^42455122 is an apocalyptic number.

42455122 is a deficient number, since it is larger than the sum of its proper divisors (21227564).

42455122 is a wasteful number, since it uses less digits than its factorization.

42455122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21227563.

The product of its digits is 3200, while the sum is 25.

The square root of 42455122 is about 6515.7595106020. The cubic root of 42455122 is about 348.8537247944.

The spelling of 42455122 in words is "forty-two million, four hundred fifty-five thousand, one hundred twenty-two".