40723420 has 12 divisors (see below), whose sum is σ = 85519224. Its totient is φ = 16289360.

The previous prime is 40723321. The next prime is 40723433. The reversal of 40723420 is 2432704.

It is a junction number, because it is equal to n+sod(n) for n = 40723391 and 40723400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1018066 + ... + 1018105.

It is an arithmetic number, because the mean of its divisors is an integer number (7126602).

Almost surely, 2^40723420 is an apocalyptic number.

It is an amenable number.

40723420 is an abundant number, since it is smaller than the sum of its proper divisors (44795804).

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

40723420 is a wasteful number, since it uses less digits than its factorization.

40723420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036180 (or 2036178 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 40723420 is about 6381.4904215238. The cubic root of 40723420 is about 344.0446016623.

The spelling of 40723420 in words is "forty million, seven hundred twenty-three thousand, four hundred twenty".