42787053749 has 16 divisors (see below), whose sum is σ = 47129402880. Its totient is φ = 38520395760.

The previous prime is 42787053737. The next prime is 42787053787. The reversal of 42787053749 is 94735078724.

It is a happy number.

It is not a de Polignac number, because 42787053749 - 2¹² = 42787049653 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 42787053694 and 42787053703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42787053719) 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 in 15 ways as a sum of consecutive naturals, for example, 5201762 + ... + 5209980.

It is an arithmetic number, because the mean of its divisors is an integer number (2945587680).

Almost surely, 2^42787053749 is an apocalyptic number.

It is an amenable number.

42787053749 is a deficient number, since it is larger than the sum of its proper divisors (4342349131).

42787053749 is a wasteful number, since it uses less digits than its factorization.

42787053749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12760.

The product of its (nonzero) digits is 11854080, while the sum is 56.

The spelling of 42787053749 in words is "forty-two billion, seven hundred eighty-seven million, fifty-three thousand, seven hundred forty-nine".