40212451 has 8 divisors (see below), whose sum is σ = 41379264. Its totient is φ = 39049920.

The previous prime is 40212449. The next prime is 40212509. The reversal of 40212451 is 15421204.

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 40212451 - 2¹ = 40212449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40212251) 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, 33111 + ... + 34303.

It is an arithmetic number, because the mean of its divisors is an integer number (5172408).

Almost surely, 2^40212451 is an apocalyptic number.

40212451 is a deficient number, since it is larger than the sum of its proper divisors (1166813).

40212451 is a wasteful number, since it uses less digits than its factorization.

40212451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 40212451 is about 6341.3288039653. The cubic root of 40212451 is about 342.5995973690.

Adding to 40212451 its reverse (15421204), we get a palindrome (55633655).

The spelling of 40212451 in words is "forty million, two hundred twelve thousand, four hundred fifty-one".