42810049381 has 12 divisors (see below), whose sum is σ = 47426208256. Its totient is φ = 38611770120.

The previous prime is 42810049369. The next prime is 42810049397. The reversal of 42810049381 is 18394001824.

It is a de Polignac number, because none of the positive numbers 2^k-42810049381 is a prime.

It is a super-2 number, since 2×42810049381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42810019381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1377555 + ... + 1408288.

Almost surely, 2^42810049381 is an apocalyptic number.

It is an amenable number.

42810049381 is a deficient number, since it is larger than the sum of its proper divisors (4616158875).

42810049381 is a wasteful number, since it uses less digits than its factorization.

42810049381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785992 (or 2785981 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

It can be divided in two parts, 428100 and 49381, that added together give a square (477481 = 691²).

The spelling of 42810049381 in words is "forty-two billion, eight hundred ten million, forty-nine thousand, three hundred eighty-one".