42315140729 has 4 divisors (see below), whose sum is σ = 42348226560. Its totient is φ = 42282054900.

The previous prime is 42315140719. The next prime is 42315140731. The reversal of 42315140729 is 92704151324.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42315140729 - 2⁴ = 42315140713 is a prime.

It is a super-2 number, since 2×42315140729² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42315140692 and 42315140701.

It is not an unprimeable number, because it can be changed into a prime (42315140719) 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, 16540997 + ... + 16543554.

It is an arithmetic number, because the mean of its divisors is an integer number (10587056640).

Almost surely, 2^42315140729 is an apocalyptic number.

It is an amenable number.

42315140729 is a deficient number, since it is larger than the sum of its proper divisors (33085831).

42315140729 is a wasteful number, since it uses less digits than its factorization.

42315140729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33085830.

The product of its (nonzero) digits is 60480, while the sum is 38.

The spelling of 42315140729 in words is "forty-two billion, three hundred fifteen million, one hundred forty thousand, seven hundred twenty-nine".