42415253 has 4 divisors (see below), whose sum is σ = 42835308. Its totient is φ = 41995200.

The previous prime is 42415237. The next prime is 42415259. The reversal of 42415253 is 35251424.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41899729 + 515524 = 6473^2 + 718^2 .

It is a cyclic number.

It is not a de Polignac number, because 42415253 - 2⁴ = 42415237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42415259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209876 + ... + 210077.

It is an arithmetic number, because the mean of its divisors is an integer number (10708827).

Almost surely, 2^42415253 is an apocalyptic number.

It is an amenable number.

42415253 is a deficient number, since it is larger than the sum of its proper divisors (420055).

42415253 is a wasteful number, since it uses less digits than its factorization.

42415253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420054.

The product of its digits is 4800, while the sum is 26.

The square root of 42415253 is about 6512.6993635512. The cubic root of 42415253 is about 348.7444894065.

Adding to 42415253 its reverse (35251424), we get a palindrome (77666677).

The spelling of 42415253 in words is "forty-two million, four hundred fifteen thousand, two hundred fifty-three".