40212345 has 8 divisors (see below), whose sum is σ = 64339776. Its totient is φ = 21446576.

The previous prime is 40212329. The next prime is 40212371. The reversal of 40212345 is 54321204.

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 40212345 - 2⁴ = 40212329 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1340397 + ... + 1340426.

It is an arithmetic number, because the mean of its divisors is an integer number (8042472).

Almost surely, 2^40212345 is an apocalyptic number.

It is an amenable number.

40212345 is a deficient number, since it is larger than the sum of its proper divisors (24127431).

40212345 is a wasteful number, since it uses less digits than its factorization.

40212345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2680831.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 40212345 is about 6341.3204460901. The cubic root of 40212345 is about 342.5992963379.

Adding to 40212345 its reverse (54321204), we get a palindrome (94533549).

The spelling of 40212345 in words is "forty million, two hundred twelve thousand, three hundred forty-five".