42740997743 has 4 divisors (see below), whose sum is σ = 44990523960. Its totient is φ = 40491471528.

The previous prime is 42740997731. The next prime is 42740997749. The reversal of 42740997743 is 34779904724.

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 42740997743 - 2⁶ = 42740997679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42740997749) 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, 1124763080 + ... + 1124763117.

It is an arithmetic number, because the mean of its divisors is an integer number (11247630990).

Almost surely, 2^42740997743 is an apocalyptic number.

42740997743 is a deficient number, since it is larger than the sum of its proper divisors (2249526217).

42740997743 is a wasteful number, since it uses less digits than its factorization.

42740997743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2249526216.

The product of its (nonzero) digits is 10668672, while the sum is 56.

The spelling of 42740997743 in words is "forty-two billion, seven hundred forty million, nine hundred ninety-seven thousand, seven hundred forty-three".