42021431033 has 2 divisors, whose sum is σ = 42021431034. Its totient is φ = 42021431032.

The previous prime is 42021430963. The next prime is 42021431041. The reversal of 42021431033 is 33013412024.

42021431033 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30221388649 + 11800042384 = 173843^2 + 108628^2 .

It is a cyclic number.

It is not a de Polignac number, because 42021431033 - 2⁸ = 42021430777 is a prime.

It is a super-2 number, since 2×42021431033² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42021431083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21010715516 + 21010715517.

It is an arithmetic number, because the mean of its divisors is an integer number (21010715517).

Almost surely, 2^42021431033 is an apocalyptic number.

It is an amenable number.

42021431033 is a deficient number, since it is larger than the sum of its proper divisors (1).

42021431033 is an equidigital number, since it uses as much as digits as its factorization.

42021431033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 42021431033 its reverse (33013412024), we get a palindrome (75034843057).

The spelling of 42021431033 in words is "forty-two billion, twenty-one million, four hundred thirty-one thousand, thirty-three".