42521401533 has 16 divisors (see below), whose sum is σ = 61173143360. Its totient is φ = 26116971264.

The previous prime is 42521401493. The next prime is 42521401543. The reversal of 42521401533 is 33510412524.

It is not a de Polignac number, because 42521401533 - 2⁶ = 42521401469 is a prime.

It is a super-2 number, since 2×42521401533² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 42521401533.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42521401543) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1021948 + ... + 1062741.

It is an arithmetic number, because the mean of its divisors is an integer number (3823321460).

Almost surely, 2^42521401533 is an apocalyptic number.

It is an amenable number.

42521401533 is a deficient number, since it is larger than the sum of its proper divisors (18651741827).

42521401533 is a wasteful number, since it uses less digits than its factorization.

42521401533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2085228.

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 42521401533 in words is "forty-two billion, five hundred twenty-one million, four hundred one thousand, five hundred thirty-three".