42115253 has 2 divisors, whose sum is σ = 42115254. Its totient is φ = 42115252.

The previous prime is 42115237. The next prime is 42115303. The reversal of 42115253 is 35251124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40729924 + 1385329 = 6382^2 + 1177^2 .

It is a cyclic number.

It is not a de Polignac number, because 42115253 - 2⁴ = 42115237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42115223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21057626 + 21057627.

It is an arithmetic number, because the mean of its divisors is an integer number (21057627).

Almost surely, 2^42115253 is an apocalyptic number.

It is an amenable number.

42115253 is a deficient number, since it is larger than the sum of its proper divisors (1).

42115253 is an equidigital number, since it uses as much as digits as its factorization.

42115253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 23.

The square root of 42115253 is about 6489.6265686093. The cubic root of 42115253 is about 347.9203284605.

Adding to 42115253 its reverse (35251124), we get a palindrome (77366377).

The spelling of 42115253 in words is "forty-two million, one hundred fifteen thousand, two hundred fifty-three".