40420455541 has 4 divisors (see below), whose sum is σ = 40521255084. Its totient is φ = 40319656000.

The previous prime is 40420455497. The next prime is 40420455557. The reversal of 40420455541 is 14555402404.

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 32272685316 + 8147770225 = 179646^2 + 90265^2 .

It is a cyclic number.

It is not a de Polignac number, because 40420455541 - 2¹⁵ = 40420422773 is a prime.

It is a super-2 number, since 2×40420455541² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40420455497 and 40420455506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40420455041) 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, 50399170 + ... + 50399971.

It is an arithmetic number, because the mean of its divisors is an integer number (10130313771).

Almost surely, 2^40420455541 is an apocalyptic number.

It is an amenable number.

40420455541 is a deficient number, since it is larger than the sum of its proper divisors (100799543).

40420455541 is a wasteful number, since it uses less digits than its factorization.

40420455541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100799542.

The product of its (nonzero) digits is 64000, while the sum is 34.

Adding to 40420455541 its reverse (14555402404), we get a palindrome (54975857945).

The spelling of 40420455541 in words is "forty billion, four hundred twenty million, four hundred fifty-five thousand, five hundred forty-one".