42021505233 has 12 divisors (see below), whose sum is σ = 64268184708. Its totient is φ = 26366434560.

The previous prime is 42021505231. The next prime is 42021505259. The reversal of 42021505233 is 33250512024.

It is a happy number.

42021505233 is a `hidden beast` number, since 420 + 2 + 1 + 5 + 0 + 5 + 233 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 28739403729 + 13282101504 = 169527^2 + 115248^2 .

It is not a de Polignac number, because 42021505233 - 2¹ = 42021505231 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42021505197 and 42021505206.

It is not an unprimeable number, because it can be changed into a prime (42021505231) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 137325028 + ... + 137325333.

It is an arithmetic number, because the mean of its divisors is an integer number (5355682059).

Almost surely, 2^42021505233 is an apocalyptic number.

It is an amenable number.

42021505233 is a deficient number, since it is larger than the sum of its proper divisors (22246679475).

42021505233 is a wasteful number, since it uses less digits than its factorization.

42021505233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274650384 (or 274650381 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The spelling of 42021505233 in words is "forty-two billion, twenty-one million, five hundred five thousand, two hundred thirty-three".