40661420 has 12 divisors (see below), whose sum is σ = 85389024. Its totient is φ = 16264560.

The previous prime is 40661407. The next prime is 40661449. The reversal of 40661420 is 2416604.

It is a happy number.

40661420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1016516 + ... + 1016555.

It is an arithmetic number, because the mean of its divisors is an integer number (7115752).

Almost surely, 2^40661420 is an apocalyptic number.

It is an amenable number.

40661420 is an abundant number, since it is smaller than the sum of its proper divisors (44727604).

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

40661420 is a wasteful number, since it uses less digits than its factorization.

40661420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033080 (or 2033078 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 40661420 is about 6376.6307718105. The cubic root of 40661420 is about 343.8699143073.

The spelling of 40661420 in words is "forty million, six hundred sixty-one thousand, four hundred twenty".