42030253 has 2 divisors, whose sum is σ = 42030254. Its totient is φ = 42030252.

The previous prime is 42030227. The next prime is 42030259. The reversal of 42030253 is 35203024.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39904489 + 2125764 = 6317^2 + 1458^2 .

It is a cyclic number.

It is not a de Polignac number, because 42030253 - 2¹⁷ = 41899181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42030253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42030259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21015126 + 21015127.

It is an arithmetic number, because the mean of its divisors is an integer number (21015127).

Almost surely, 2^42030253 is an apocalyptic number.

It is an amenable number.

42030253 is a deficient number, since it is larger than the sum of its proper divisors (1).

42030253 is an equidigital number, since it uses as much as digits as its factorization.

42030253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 42030253 is about 6483.0743478692. The cubic root of 42030253 is about 347.6861049608.

Adding to 42030253 its reverse (35203024), we get a palindrome (77233277).

The spelling of 42030253 in words is "forty-two million, thirty thousand, two hundred fifty-three".