42275140781 has 4 divisors (see below), whose sum is σ = 42280648032. Its totient is φ = 42269633532.

The previous prime is 42275140769. The next prime is 42275140783. The reversal of 42275140781 is 18704157224.

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 42275140781 - 2²² = 42270946477 is a prime.

It is a super-2 number, since 2×42275140781² (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 (42275140783) 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, 2742095 + ... + 2757468.

It is an arithmetic number, because the mean of its divisors is an integer number (10570162008).

Almost surely, 2^42275140781 is an apocalyptic number.

It is an amenable number.

42275140781 is a deficient number, since it is larger than the sum of its proper divisors (5507251).

42275140781 is an equidigital number, since it uses as much as digits as its factorization.

42275140781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5507250.

The product of its (nonzero) digits is 125440, while the sum is 41.

The spelling of 42275140781 in words is "forty-two billion, two hundred seventy-five million, one hundred forty thousand, seven hundred eighty-one".