42015793 has 2 divisors, whose sum is σ = 42015794. Its totient is φ = 42015792.

The previous prime is 42015781. The next prime is 42015851. The reversal of 42015793 is 39751024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35426304 + 6589489 = 5952^2 + 2567^2 .

It is a cyclic number.

It is not a de Polignac number, because 42015793 - 2¹³ = 42007601 is a prime.

It is a super-2 number, since 2×42015793² = 3530653722837698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42015703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21007896 + 21007897.

It is an arithmetic number, because the mean of its divisors is an integer number (21007897).

Almost surely, 2^42015793 is an apocalyptic number.

It is an amenable number.

42015793 is a deficient number, since it is larger than the sum of its proper divisors (1).

42015793 is an equidigital number, since it uses as much as digits as its factorization.

42015793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 42015793 is about 6481.9590402902. The cubic root of 42015793 is about 347.6462279882.

The spelling of 42015793 in words is "forty-two million, fifteen thousand, seven hundred ninety-three".