42513349 has 2 divisors, whose sum is σ = 42513350. Its totient is φ = 42513348.

The previous prime is 42513337. The next prime is 42513397. The reversal of 42513349 is 94331524.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42016324 + 497025 = 6482^2 + 705^2 .

It is a cyclic number.

It is not a de Polignac number, because 42513349 - 2⁷ = 42513221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42513349.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42513319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21256674 + 21256675.

It is an arithmetic number, because the mean of its divisors is an integer number (21256675).

Almost surely, 2^42513349 is an apocalyptic number.

It is an amenable number.

42513349 is a deficient number, since it is larger than the sum of its proper divisors (1).

42513349 is an equidigital number, since it uses as much as digits as its factorization.

42513349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12960, while the sum is 31.

The square root of 42513349 is about 6520.2261463848. The cubic root of 42513349 is about 349.0131356867.

The spelling of 42513349 in words is "forty-two million, five hundred thirteen thousand, three hundred forty-nine".