42021315511 has 16 divisors (see below), whose sum is σ = 48519737344. Its totient is φ = 35647159104.

The previous prime is 42021315509. The next prime is 42021315527. The reversal of 42021315511 is 11551312024.

It is a cyclic number.

It is not a de Polignac number, because 42021315511 - 2¹ = 42021315509 is a prime.

It is a super-3 number, since 3×42021315511³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42021315911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1247290 + ... + 1280536.

It is an arithmetic number, because the mean of its divisors is an integer number (3032483584).

Almost surely, 2^42021315511 is an apocalyptic number.

42021315511 is a deficient number, since it is larger than the sum of its proper divisors (6498421833).

42021315511 is a wasteful number, since it uses less digits than its factorization.

42021315511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35110.

The product of its (nonzero) digits is 1200, while the sum is 25.

Adding to 42021315511 its reverse (11551312024), we get a palindrome (53572627535).

The spelling of 42021315511 in words is "forty-two billion, twenty-one million, three hundred fifteen thousand, five hundred eleven".