42457737746 has 8 divisors (see below), whose sum is σ = 63698158524. Its totient is φ = 21225018240.

The previous prime is 42457737719. The next prime is 42457737757. The reversal of 42457737746 is 64773775424.

It can be written as a sum of positive squares in 2 ways, for example, as 36796830625 + 5660907121 = 191825^2 + 75239^2 .

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

It is a super-2 number, since 2×42457737746² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42457737691 and 42457737700.

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, 1911515 + ... + 1933598.

Almost surely, 2^42457737746 is an apocalyptic number.

42457737746 is a deficient number, since it is larger than the sum of its proper divisors (21240420778).

42457737746 is a wasteful number, since it uses less digits than its factorization.

42457737746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3850636.

The product of its digits is 27659520, while the sum is 56.

The spelling of 42457737746 in words is "forty-two billion, four hundred fifty-seven million, seven hundred thirty-seven thousand, seven hundred forty-six".