42729747351 has 4 divisors (see below), whose sum is σ = 56972996472. Its totient is φ = 28486498232.

The previous prime is 42729747343. The next prime is 42729747371. The reversal of 42729747351 is 15374792724.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 42729747351 - 2³ = 42729747343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42729747294 and 42729747303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42729747371) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7121624556 + ... + 7121624561.

It is an arithmetic number, because the mean of its divisors is an integer number (14243249118).

Almost surely, 2^42729747351 is an apocalyptic number.

42729747351 is a deficient number, since it is larger than the sum of its proper divisors (14243249121).

42729747351 is a wasteful number, since it uses less digits than its factorization.

42729747351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14243249120.

The product of its digits is 2963520, while the sum is 51.

The spelling of 42729747351 in words is "forty-two billion, seven hundred twenty-nine million, seven hundred forty-seven thousand, three hundred fifty-one".