40154543 has 16 divisors (see below), whose sum is σ = 49660800. Its totient is φ = 31920480.

The previous prime is 40154537. The next prime is 40154593. The reversal of 40154543 is 34545104.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40154543 is a prime.

It is a super-2 number, since 2×40154543² = 3224774647077698, 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 (40154593) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4673 + ... + 10106.

It is an arithmetic number, because the mean of its divisors is an integer number (3103800).

Almost surely, 2^40154543 is an apocalyptic number.

40154543 is a deficient number, since it is larger than the sum of its proper divisors (9506257).

40154543 is a wasteful number, since it uses less digits than its factorization.

40154543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14822.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 40154543 is about 6336.7612389927. The cubic root of 40154543 is about 342.4350646782.

Adding to 40154543 its reverse (34545104), we get a palindrome (74699647).

It can be divided in two parts, 4015 and 4543, that added together give a palindrome (8558).

The spelling of 40154543 in words is "forty million, one hundred fifty-four thousand, five hundred forty-three".