41023781 has 4 divisors (see below), whose sum is σ = 41696364. Its totient is φ = 40351200.

The previous prime is 41023753. The next prime is 41023817. The reversal of 41023781 is 18732014.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23668225 + 17355556 = 4865^2 + 4166^2 .

It is a cyclic number.

It is not a de Polignac number, because 41023781 - 2¹⁴ = 41007397 is a prime.

It is a super-2 number, since 2×41023781² = 3365901215071922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 41023781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41023751) 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, 336200 + ... + 336321.

It is an arithmetic number, because the mean of its divisors is an integer number (10424091).

Almost surely, 2^41023781 is an apocalyptic number.

It is an amenable number.

41023781 is a deficient number, since it is larger than the sum of its proper divisors (672583).

41023781 is an equidigital number, since it uses as much as digits as its factorization.

41023781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672582.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 41023781 is about 6404.9809523526. The cubic root of 41023781 is about 344.8883794894. Note that the first 3 decimals are identical.

Adding to 41023781 its reverse (18732014), we get a palindrome (59755795).

The spelling of 41023781 in words is "forty-one million, twenty-three thousand, seven hundred eighty-one".