42036081 has 8 divisors (see below), whose sum is σ = 56078880. Its totient is φ = 28008672.

The previous prime is 42036077. The next prime is 42036091. The reversal of 42036081 is 18063024.

It is a happy number.

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

It is not a de Polignac number, because 42036081 - 2² = 42036077 is a prime.

It is a super-2 number, since 2×42036081² = 3534064211677122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42036011) 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, 6525 + ... + 11253.

It is an arithmetic number, because the mean of its divisors is an integer number (7009860).

Almost surely, 2^42036081 is an apocalyptic number.

It is an amenable number.

42036081 is a deficient number, since it is larger than the sum of its proper divisors (14042799).

42036081 is a wasteful number, since it uses less digits than its factorization.

42036081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7695.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 42036081 is about 6483.5238103982. The cubic root of 42036081 is about 347.7021745045.

The spelling of 42036081 in words is "forty-two million, thirty-six thousand, eighty-one".