42559091723 has 8 divisors (see below), whose sum is σ = 44049020400. Its totient is φ = 41070654688.

The previous prime is 42559091681. The next prime is 42559091791. The reversal of 42559091723 is 32719095524.

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

It is not a de Polignac number, because 42559091723 - 2¹⁰ = 42559090699 is a prime.

It is a super-2 number, since 2×42559091723² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42559091423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314693 + ... + 429126.

It is an arithmetic number, because the mean of its divisors is an integer number (5506127550).

Almost surely, 2^42559091723 is an apocalyptic number.

42559091723 is a deficient number, since it is larger than the sum of its proper divisors (1489928677).

42559091723 is a wasteful number, since it uses less digits than its factorization.

42559091723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745821.

The product of its (nonzero) digits is 680400, while the sum is 47.

The spelling of 42559091723 in words is "forty-two billion, five hundred fifty-nine million, ninety-one thousand, seven hundred twenty-three".