3742181 has 4 divisors (see below), whose sum is σ = 3747552.
Its totient is φ = 3736812.
The previous prime is 3742139. The next prime is 3742201. The reversal of 3742181 is 1812473.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 3742181 - 26 = 3742117 is a prime.
It is a super-2 number, since 2×37421812 = 28007837273522, which contains 22 as substring.
It is a Duffinian number.
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 3742181.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (3742121) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1451 + ... + 3096.
It is an arithmetic number, because the mean of its divisors is an integer number (936888).
Almost surely, 23742181 is an apocalyptic number.
It is an amenable number.
3742181 is a deficient number, since it is larger than the sum of its proper divisors (5371).
3742181 is an equidigital number, since it uses as much as digits as its factorization.
3742181 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 5370.
The product of its digits is 1344, while the sum is 26.
The square root of 3742181 is about 1934.4717625233.
The cubic root of 3742181 is about 155.2535703802.
The spelling of 3742181 in words is "three million, seven hundred forty-two thousand, one hundred eighty-one".