42000132665 has 16 divisors (see below), whose sum is σ = 51570248400. Its totient is φ = 32827441920.

The previous prime is 42000132637. The next prime is 42000132679. The reversal of 42000132665 is 56623100024.

It can be written as a sum of positive squares in 8 ways, for example, as 2097273616 + 39902859049 = 45796^2 + 199757^2 .

It is not a de Polignac number, because 42000132665 - 2¹⁶ = 42000067129 is a prime.

It is a super-2 number, since 2×42000132665² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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, 416654 + ... + 507543.

It is an arithmetic number, because the mean of its divisors is an integer number (3223140525).

Almost surely, 2^42000132665 is an apocalyptic number.

It is an amenable number.

42000132665 is a deficient number, since it is larger than the sum of its proper divisors (9570115735).

42000132665 is a wasteful number, since it uses less digits than its factorization.

42000132665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 924412.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 42000132665 its reverse (56623100024), we get a palindrome (98623232689).

The spelling of 42000132665 in words is "forty-two billion, one hundred thirty-two thousand, six hundred sixty-five".