40670421 has 8 divisors (see below), whose sum is σ = 59157024. Its totient is φ = 24648720.

The previous prime is 40670381. The next prime is 40670423. The reversal of 40670421 is 12407604.

40670421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 40670421 - 2¹⁴ = 40654037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40670391 and 40670400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40670423) 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 7 ways as a sum of consecutive naturals, for example, 616186 + ... + 616251.

It is an arithmetic number, because the mean of its divisors is an integer number (7394628).

Almost surely, 2^40670421 is an apocalyptic number.

It is an amenable number.

40670421 is a deficient number, since it is larger than the sum of its proper divisors (18486603).

40670421 is a wasteful number, since it uses less digits than its factorization.

40670421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232451.

The product of its (nonzero) digits is 1344, while the sum is 24.

The square root of 40670421 is about 6377.3365129966. The cubic root of 40670421 is about 343.8952859802.

The spelling of 40670421 in words is "forty million, six hundred seventy thousand, four hundred twenty-one".