42403081 has 12 divisors (see below), whose sum is σ = 49434960. Its totient is φ = 36265320.

The previous prime is 42403069. The next prime is 42403093. The reversal of 42403081 is 18030424.

It is an interprime number because it is at equal distance from previous prime (42403069) and next prime (42403093).

It is not a de Polignac number, because 42403081 - 2⁷ = 42402953 is a prime.

It is a super-2 number, since 2×42403081² = 3596042556585122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42403981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35626 + ... + 36796.

It is an arithmetic number, because the mean of its divisors is an integer number (4119580).

Almost surely, 2^42403081 is an apocalyptic number.

It is an amenable number.

42403081 is a deficient number, since it is larger than the sum of its proper divisors (7031879).

42403081 is a wasteful number, since it uses less digits than its factorization.

42403081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1924 (or 1917 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 42403081 is about 6511.7648145491. The cubic root of 42403081 is about 348.7111262195.

The spelling of 42403081 in words is "forty-two million, four hundred three thousand, eighty-one".