40421306 has 16 divisors (see below), whose sum is σ = 61461504. Its totient is φ = 19936224.

The previous prime is 40421299. The next prime is 40421309. The reversal of 40421306 is 60312404.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (40421309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58841 + ... + 59523.

It is an arithmetic number, because the mean of its divisors is an integer number (3841344).

Almost surely, 2^40421306 is an apocalyptic number.

40421306 is a deficient number, since it is larger than the sum of its proper divisors (21040198).

40421306 is a wasteful number, since it uses less digits than its factorization.

40421306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 40421306 is about 6357.7752398146. The cubic root of 40421306 is about 343.1917035050.

The spelling of 40421306 in words is "forty million, four hundred twenty-one thousand, three hundred six".