42451352242 has 8 divisors (see below), whose sum is σ = 68575261356. Its totient is φ = 19592931792.

The previous prime is 42451352219. The next prime is 42451352297. The reversal of 42451352242 is 24225315424.

It can be written as a sum of positive squares in 2 ways, for example, as 37954442761 + 4496909481 = 194819^2 + 67059^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 42451352198 and 42451352207.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 816372133 + ... + 816372184.

Almost surely, 2^42451352242 is an apocalyptic number.

42451352242 is a deficient number, since it is larger than the sum of its proper divisors (26123909114).

42451352242 is a wasteful number, since it uses less digits than its factorization.

42451352242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1632744332.

The product of its digits is 76800, while the sum is 34.

Adding to 42451352242 its reverse (24225315424), we get a palindrome (66676667666).

The spelling of 42451352242 in words is "forty-two billion, four hundred fifty-one million, three hundred fifty-two thousand, two hundred forty-two".