42140581 has 8 divisors (see below), whose sum is σ = 48202880. Its totient is φ = 36088848.

The previous prime is 42140561. The next prime is 42140587. The reversal of 42140581 is 18504124.

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 42140581 - 2¹¹ = 42138533 is a prime.

It is a super-2 number, since 2×42140581² = 3551657134035122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42140587) 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, 9880 + ... + 13486.

It is an arithmetic number, because the mean of its divisors is an integer number (6025360).

Almost surely, 2^42140581 is an apocalyptic number.

It is an amenable number.

42140581 is a deficient number, since it is larger than the sum of its proper divisors (6062299).

42140581 is a wasteful number, since it uses less digits than its factorization.

42140581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5283.

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 42140581 is about 6491.5776972936. The cubic root of 42140581 is about 347.9900606004.

The spelling of 42140581 in words is "forty-two million, one hundred forty thousand, five hundred eighty-one".