42035534040021 has 8 divisors (see below), whose sum is σ = 56047452791520. Its totient is φ = 28023652324272.

The previous prime is 42035534040001. The next prime is 42035534040041. The reversal of 42035534040021 is 12004043553024.

It is an interprime number because it is at equal distance from previous prime (42035534040001) and next prime (42035534040041).

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

It is not a de Polignac number, because 42035534040021 - 2²² = 42035529845717 is a prime.

It is a super-2 number, since 2×42035534040021² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42035534040001) 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, 6492526 + ... + 11234943.

It is an arithmetic number, because the mean of its divisors is an integer number (7005931598940).

Almost surely, 2^{42035534040021} is an apocalyptic number.

It is an amenable number.

42035534040021 is a deficient number, since it is larger than the sum of its proper divisors (14011918751499).

42035534040021 is a wasteful number, since it uses less digits than its factorization.

42035534040021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18517875.

The product of its (nonzero) digits is 57600, while the sum is 33.

Adding to 42035534040021 its reverse (12004043553024), we get a palindrome (54039577593045).

The spelling of 42035534040021 in words is "forty-two trillion, thirty-five billion, five hundred thirty-four million, forty thousand, twenty-one".