42156313 has 2 divisors, whose sum is σ = 42156314. Its totient is φ = 42156312.

The previous prime is 42156299. The next prime is 42156347. The reversal of 42156313 is 31365124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29289744 + 12866569 = 5412^2 + 3587^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42156313 is a prime.

It is not a weakly prime, because it can be changed into another prime (42156013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21078156 + 21078157.

It is an arithmetic number, because the mean of its divisors is an integer number (21078157).

Almost surely, 2^42156313 is an apocalyptic number.

It is an amenable number.

42156313 is a deficient number, since it is larger than the sum of its proper divisors (1).

42156313 is an equidigital number, since it uses as much as digits as its factorization.

42156313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 42156313 is about 6492.7893081479. The cubic root of 42156313 is about 348.0333593114.

The spelling of 42156313 in words is "forty-two million, one hundred fifty-six thousand, three hundred thirteen".