42238253 has 2 divisors, whose sum is σ = 42238254. Its totient is φ = 42238252.

The previous prime is 42238249. The next prime is 42238267. The reversal of 42238253 is 35283224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21325924 + 20912329 = 4618^2 + 4573^2 .

It is a cyclic number.

It is not a de Polignac number, because 42238253 - 2² = 42238249 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42238223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21119126 + 21119127.

It is an arithmetic number, because the mean of its divisors is an integer number (21119127).

Almost surely, 2^42238253 is an apocalyptic number.

It is an amenable number.

42238253 is a deficient number, since it is larger than the sum of its proper divisors (1).

42238253 is an equidigital number, since it uses as much as digits as its factorization.

42238253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11520, while the sum is 29.

The square root of 42238253 is about 6499.0963217974. The cubic root of 42238253 is about 348.2587063154.

The spelling of 42238253 in words is "forty-two million, two hundred thirty-eight thousand, two hundred fifty-three".