42540353261 has 8 divisors (see below), whose sum is σ = 48663291264. Its totient is φ = 36428851440.

The previous prime is 42540353209. The next prime is 42540353321. The reversal of 42540353261 is 16235304524.

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

It is a cyclic number.

It is not a de Polignac number, because 42540353261 - 2¹⁴ = 42540336877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42540355261) 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, 2851070 + ... + 2865951.

It is an arithmetic number, because the mean of its divisors is an integer number (6082911408).

Almost surely, 2^42540353261 is an apocalyptic number.

It is an amenable number.

42540353261 is a deficient number, since it is larger than the sum of its proper divisors (6122938003).

42540353261 is a wasteful number, since it uses less digits than its factorization.

42540353261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5718091.

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 42540353261 its reverse (16235304524), we get a palindrome (58775657785).

The spelling of 42540353261 in words is "forty-two billion, five hundred forty million, three hundred fifty-three thousand, two hundred sixty-one".