42810815140 has 24 divisors (see below), whose sum is σ = 90038749752. Its totient is φ = 17098414080.

The previous prime is 42810815119. The next prime is 42810815149. The reversal of 42810815140 is 4151801824.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24042363136 + 18768452004 = 155056^2 + 136998^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42810815096 and 42810815105.

It is not an unprimeable number, because it can be changed into a prime (42810815149) 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, 1605949 + ... + 1632388.

It is an arithmetic number, because the mean of its divisors is an integer number (3751614573).

Almost surely, 2^42810815140 is an apocalyptic number.

It is an amenable number.

42810815140 is an abundant number, since it is smaller than the sum of its proper divisors (47227934612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42810815140 is a wasteful number, since it uses less digits than its factorization.

42810815140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239007 (or 3239005 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 34.

The spelling of 42810815140 in words is "forty-two billion, eight hundred ten million, eight hundred fifteen thousand, one hundred forty".