42502417 has 2 divisors, whose sum is σ = 42502418. Its totient is φ = 42502416.

The previous prime is 42502387. The next prime is 42502451. The reversal of 42502417 is 71420524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36857041 + 5645376 = 6071^2 + 2376^2 .

It is a cyclic number.

It is not a de Polignac number, because 42502417 - 2¹⁹ = 41978129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42502391 and 42502400.

It is not a weakly prime, because it can be changed into another prime (42506417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21251208 + 21251209.

It is an arithmetic number, because the mean of its divisors is an integer number (21251209).

Almost surely, 2^42502417 is an apocalyptic number.

It is an amenable number.

42502417 is a deficient number, since it is larger than the sum of its proper divisors (1).

42502417 is an equidigital number, since it uses as much as digits as its factorization.

42502417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 42502417 is about 6519.3877780049. The cubic root of 42502417 is about 348.9832177216.

The spelling of 42502417 in words is "forty-two million, five hundred two thousand, four hundred seventeen".