42454253 has 4 divisors (see below), whose sum is σ = 44951580. Its totient is φ = 39956928.

The previous prime is 42454177. The next prime is 42454267. The reversal of 42454253 is 35245424.

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 38775529 + 3678724 = 6227^2 + 1918^2 .

It is a cyclic number.

It is not a de Polignac number, because 42454253 - 2¹⁴ = 42437869 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 (42454553) 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, 1248638 + ... + 1248671.

It is an arithmetic number, because the mean of its divisors is an integer number (11237895).

Almost surely, 2^42454253 is an apocalyptic number.

It is an amenable number.

42454253 is a deficient number, since it is larger than the sum of its proper divisors (2497327).

42454253 is a wasteful number, since it uses less digits than its factorization.

42454253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497326.

The product of its digits is 19200, while the sum is 29.

The square root of 42454253 is about 6515.6928257861. The cubic root of 42454253 is about 348.8513445873.

Adding to 42454253 its reverse (35245424), we get a palindrome (77699677).

The spelling of 42454253 in words is "forty-two million, four hundred fifty-four thousand, two hundred fifty-three".