40421154 has 8 divisors (see below), whose sum is σ = 80842320. Its totient is φ = 13473716.

The previous prime is 40421153. The next prime is 40421177. The reversal of 40421154 is 45112404.

It is a happy number.

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

40421154 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 40421154.

It is not an unprimeable number, because it can be changed into a prime (40421153) 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 3 ways as a sum of consecutive naturals, for example, 3368424 + ... + 3368435.

It is an arithmetic number, because the mean of its divisors is an integer number (10105290).

Almost surely, 2^40421154 is an apocalyptic number.

40421154 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40421154 is a wasteful number, since it uses less digits than its factorization.

40421154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6736864.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 40421154 is about 6357.7632859363. The cubic root of 40421154 is about 343.1912733258.

Adding to 40421154 its reverse (45112404), we get a palindrome (85533558).

The spelling of 40421154 in words is "forty million, four hundred twenty-one thousand, one hundred fifty-four".