42402042433 has 2 divisors, whose sum is σ = 42402042434. Its totient is φ = 42402042432.

The previous prime is 42402042407. The next prime is 42402042443. The reversal of 42402042433 is 33424020424.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40591369729 + 1810672704 = 201473^2 + 42552^2 .

It is a cyclic number.

It is not a de Polignac number, because 42402042433 - 2⁵ = 42402042401 is a prime.

It is not a weakly prime, because it can be changed into another prime (42402042443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21201021216 + 21201021217.

It is an arithmetic number, because the mean of its divisors is an integer number (21201021217).

Almost surely, 2^42402042433 is an apocalyptic number.

It is an amenable number.

42402042433 is a deficient number, since it is larger than the sum of its proper divisors (1).

42402042433 is an equidigital number, since it uses as much as digits as its factorization.

42402042433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 28.

Adding to 42402042433 its reverse (33424020424), we get a palindrome (75826062857).

The spelling of 42402042433 in words is "forty-two billion, four hundred two million, forty-two thousand, four hundred thirty-three".