40575421 has 8 divisors (see below), whose sum is σ = 42380640. Its totient is φ = 38807568.

The previous prime is 40575419. The next prime is 40575433. The reversal of 40575421 is 12457504.

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

It is a cyclic number.

It is not a de Polignac number, because 40575421 - 2¹ = 40575419 is a prime.

It is a super-3 number, since 3×40575421³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40575421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40575121) 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, 7111 + ... + 11476.

It is an arithmetic number, because the mean of its divisors is an integer number (5297580).

Almost surely, 2^40575421 is an apocalyptic number.

It is an amenable number.

40575421 is a deficient number, since it is larger than the sum of its proper divisors (1805219).

40575421 is a wasteful number, since it uses less digits than its factorization.

40575421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18683.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 40575421 is about 6369.8839078903. The cubic root of 40575421 is about 343.6273146317.

The spelling of 40575421 in words is "forty million, five hundred seventy-five thousand, four hundred twenty-one".