42018481 has 8 divisors (see below), whose sum is σ = 45309600. Its totient is φ = 38835360.

The previous prime is 42018479. The next prime is 42018503. The reversal of 42018481 is 18481024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 42018481 - 2¹ = 42018479 is a prime.

It is a super-2 number, since 2×42018481² = 3531105491094722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42018461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26191 + ... + 27748.

It is an arithmetic number, because the mean of its divisors is an integer number (5663700).

Almost surely, 2^42018481 is an apocalyptic number.

42018481 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

42018481 is a deficient number, since it is larger than the sum of its proper divisors (3291119).

42018481 is a wasteful number, since it uses less digits than its factorization.

42018481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53999.

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 42018481 is about 6482.1663816968. The cubic root of 42018481 is about 347.6536414952.

The spelling of 42018481 in words is "forty-two million, eighteen thousand, four hundred eighty-one".