42535221365 has 128 divisors (see below), whose sum is σ = 69115576320. Its totient is φ = 24360652800.

The previous prime is 42535221347. The next prime is 42535221383. The reversal of 42535221365 is 56312253524.

It is an interprime number because it is at equal distance from previous prime (42535221347) and next prime (42535221383).

It is not a de Polignac number, because 42535221365 - 2¹² = 42535217269 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 42921020 + ... + 42922010.

It is an arithmetic number, because the mean of its divisors is an integer number (539965440).

Almost surely, 2^42535221365 is an apocalyptic number.

It is an amenable number.

42535221365 is a deficient number, since it is larger than the sum of its proper divisors (26580354955).

42535221365 is a wasteful number, since it uses less digits than its factorization.

42535221365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1243.

The product of its digits is 216000, while the sum is 38.

Adding to 42535221365 its reverse (56312253524), we get a palindrome (98847474889).

The spelling of 42535221365 in words is "forty-two billion, five hundred thirty-five million, two hundred twenty-one thousand, three hundred sixty-five".