40154641 has 8 divisors (see below), whose sum is σ = 42070784. Its totient is φ = 38277360.

The previous prime is 40154623. The next prime is 40154651. The reversal of 40154641 is 14645104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40154641 - 2¹⁷ = 40023569 is a prime.

It is a super-2 number, since 2×40154641² = 3224790387677762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40154651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7590 + ... + 11743.

It is an arithmetic number, because the mean of its divisors is an integer number (5258848).

Almost surely, 2^40154641 is an apocalyptic number.

It is an amenable number.

40154641 is a deficient number, since it is larger than the sum of its proper divisors (1916143).

40154641 is a wasteful number, since it uses less digits than its factorization.

40154641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19431.

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 40154641 is about 6336.7689716448. The cubic root of 40154641 is about 342.4353432570.

Adding to 40154641 its reverse (14645104), we get a palindrome (54799745).

The spelling of 40154641 in words is "forty million, one hundred fifty-four thousand, six hundred forty-one".