42211181 has 8 divisors (see below), whose sum is σ = 44636928. Its totient is φ = 39852000.

The previous prime is 42211171. The next prime is 42211219. The reversal of 42211181 is 18111224.

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

It is a de Polignac number, because none of the positive numbers 2^k-42211181 is a prime.

It is a super-2 number, since 2×42211181² = 3563567602829522, 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 (42211111) 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, 15335 + ... + 17876.

It is an arithmetic number, because the mean of its divisors is an integer number (5579616).

Almost surely, 2^42211181 is an apocalyptic number.

42211181 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

42211181 is a deficient number, since it is larger than the sum of its proper divisors (2425747).

42211181 is a wasteful number, since it uses less digits than its factorization.

42211181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33283.

The product of its digits is 128, while the sum is 20.

The square root of 42211181 is about 6497.0132368651. The cubic root of 42211181 is about 348.1842866128.

The spelling of 42211181 in words is "forty-two million, two hundred eleven thousand, one hundred eighty-one".