40211020243 has 6 divisors (see below), whose sum is σ = 40520335052. Its totient is φ = 39904048860.

The previous prime is 40211020237. The next prime is 40211020249. The reversal of 40211020243 is 34202011204.

It is an interprime number because it is at equal distance from previous prime (40211020237) and next prime (40211020249).

It is not a de Polignac number, because 40211020243 - 2¹⁷ = 40210889171 is a prime.

It is a super-2 number, since 2×40211020243² (a number of 22 digits) 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 40211020243.

It is not an unprimeable number, because it can be changed into a prime (40211020249) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1154421 + ... + 1188742.

Almost surely, 2^40211020243 is an apocalyptic number.

40211020243 is a deficient number, since it is larger than the sum of its proper divisors (309314809).

40211020243 is an equidigital number, since it uses as much as digits as its factorization.

40211020243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2343425 (or 2343294 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 40211020243 its reverse (34202011204), we get a palindrome (74413031447).

The spelling of 40211020243 in words is "forty billion, two hundred eleven million, twenty thousand, two hundred forty-three".