42415435401521 has 32 divisors (see below), whose sum is σ = 52964327824128. Its totient is φ = 33072450969600.

The previous prime is 42415435401481. The next prime is 42415435401527. The reversal of 42415435401521 is 12510453451424.

It is not a de Polignac number, because 42415435401521 - 2⁶ = 42415435401457 is a prime.

It is a super-3 number, since 3×42415435401521³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (42415435401527) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3973376 + ... + 10030881.

It is an arithmetic number, because the mean of its divisors is an integer number (1655135244504).

Almost surely, 2^{42415435401521} is an apocalyptic number.

It is an amenable number.

42415435401521 is a deficient number, since it is larger than the sum of its proper divisors (10548892422607).

42415435401521 is a wasteful number, since it uses less digits than its factorization.

42415435401521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14004761.

The product of its (nonzero) digits is 384000, while the sum is 41.

Adding to 42415435401521 its reverse (12510453451424), we get a palindrome (54925888852945).

The spelling of 42415435401521 in words is "forty-two trillion, four hundred fifteen billion, four hundred thirty-five million, four hundred one thousand, five hundred twenty-one".