40219420 has 12 divisors (see below), whose sum is σ = 84460824. Its totient is φ = 16087760.

The previous prime is 40219411. The next prime is 40219427. The reversal of 40219420 is 2491204.

40219420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 40219391 and 40219400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40219427) by changing a digit.

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, 1005466 + ... + 1005505.

It is an arithmetic number, because the mean of its divisors is an integer number (7038402).

Almost surely, 2^40219420 is an apocalyptic number.

It is an amenable number.

40219420 is an abundant number, since it is smaller than the sum of its proper divisors (44241404).

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

40219420 is a wasteful number, since it uses less digits than its factorization.

40219420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2010980 (or 2010978 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 40219420 is about 6341.8782706703. The cubic root of 40219420 is about 342.6193875800.

The spelling of 40219420 in words is "forty million, two hundred nineteen thousand, four hundred twenty".