40700181 has 4 divisors (see below), whose sum is σ = 54266912. Its totient is φ = 27133452.

The previous prime is 40700171. The next prime is 40700183. The reversal of 40700181 is 18100704.

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 not a de Polignac number, because 40700181 - 2⁷ = 40700053 is a prime.

It is a super-2 number, since 2×40700181² = 3313009466865522, 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 (40700183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6783361 + ... + 6783366.

It is an arithmetic number, because the mean of its divisors is an integer number (13566728).

Almost surely, 2^40700181 is an apocalyptic number.

It is an amenable number.

40700181 is a deficient number, since it is larger than the sum of its proper divisors (13566731).

40700181 is a wasteful number, since it uses less digits than its factorization.

40700181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13566730.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 40700181 is about 6379.6693487986. The cubic root of 40700181 is about 343.9791456846.

Adding to 40700181 its reverse (18100704), we get a palindrome (58800885).

The spelling of 40700181 in words is "forty million, seven hundred thousand, one hundred eighty-one".