42130313 has 2 divisors, whose sum is σ = 42130314. Its totient is φ = 42130312.

The previous prime is 42130303. The next prime is 42130327. The reversal of 42130313 is 31303124.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32569849 + 9560464 = 5707^2 + 3092^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42130313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42130291 and 42130300.

It is not a weakly prime, because it can be changed into another prime (42130303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21065156 + 21065157.

It is an arithmetic number, because the mean of its divisors is an integer number (21065157).

Almost surely, 2^42130313 is an apocalyptic number.

It is an amenable number.

42130313 is a deficient number, since it is larger than the sum of its proper divisors (1).

42130313 is an equidigital number, since it uses as much as digits as its factorization.

42130313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 42130313 is about 6490.7867781957. The cubic root of 42130313 is about 347.9617944801.

Adding to 42130313 its reverse (31303124), we get a palindrome (73433437).

The spelling of 42130313 in words is "forty-two million, one hundred thirty thousand, three hundred thirteen".