42120433 has 2 divisors, whose sum is σ = 42120434. Its totient is φ = 42120432.

The previous prime is 42120427. The next prime is 42120451. The reversal of 42120433 is 33402124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29680704 + 12439729 = 5448^2 + 3527^2 .

It is a cyclic number.

It is not a de Polignac number, because 42120433 - 2²⁵ = 8566001 is a prime.

It is a super-2 number, since 2×42120433² = 3548261752214978, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 42120433.

It is not a weakly prime, because it can be changed into another prime (42120233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21060216 + 21060217.

It is an arithmetic number, because the mean of its divisors is an integer number (21060217).

Almost surely, 2^42120433 is an apocalyptic number.

It is an amenable number.

42120433 is a deficient number, since it is larger than the sum of its proper divisors (1).

42120433 is an equidigital number, since it uses as much as digits as its factorization.

42120433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 42120433 is about 6490.0256548029. The cubic root of 42120433 is about 347.9345921243.

Adding to 42120433 its reverse (33402124), we get a palindrome (75522557).

The spelling of 42120433 in words is "forty-two million, one hundred twenty thousand, four hundred thirty-three".