40556141 has 4 divisors (see below), whose sum is σ = 40569984. Its totient is φ = 40542300.

The previous prime is 40556119. The next prime is 40556177. The reversal of 40556141 is 14165504.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40556141 is a prime.

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 40556141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40556111) 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, 605 + ... + 9026.

It is an arithmetic number, because the mean of its divisors is an integer number (10142496).

Almost surely, 2^40556141 is an apocalyptic number.

It is an amenable number.

40556141 is a deficient number, since it is larger than the sum of its proper divisors (13843).

40556141 is an equidigital number, since it uses as much as digits as its factorization.

40556141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13842.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 40556141 is about 6368.3703566925. The cubic root of 40556141 is about 343.5728795075.

The spelling of 40556141 in words is "forty million, five hundred fifty-six thousand, one hundred forty-one".