42451222004 has 6 divisors (see below), whose sum is σ = 74289638514. Its totient is φ = 21225611000.

The previous prime is 42451221977. The next prime is 42451222007. The reversal of 42451222004 is 40022215424.

It can be written as a sum of positive squares in only one way, i.e., 31647698404 + 10803523600 = 177898^2 + 103940^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42451222007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5306402747 + ... + 5306402754.

It is an arithmetic number, because the mean of its divisors is an integer number (12381606419).

Almost surely, 2^42451222004 is an apocalyptic number.

It is an amenable number.

42451222004 is a deficient number, since it is larger than the sum of its proper divisors (31838416510).

42451222004 is a wasteful number, since it uses less digits than its factorization.

42451222004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10612805505 (or 10612805503 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 42451222004 its reverse (40022215424), we get a palindrome (82473437428).

The spelling of 42451222004 in words is "forty-two billion, four hundred fifty-one million, two hundred twenty-two thousand, four".