40212490 has 8 divisors (see below), whose sum is σ = 72382500. Its totient is φ = 16084992.

The previous prime is 40212449. The next prime is 40212509. The reversal of 40212490 is 9421204.

It can be written as a sum of positive squares in 2 ways, for example, as 39551521 + 660969 = 6289^2 + 813^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2010615 + ... + 2010634.

Almost surely, 2^40212490 is an apocalyptic number.

40212490 is a deficient number, since it is larger than the sum of its proper divisors (32170010).

40212490 is a wasteful number, since it uses less digits than its factorization.

40212490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4021256.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 40212490 is about 6341.3318790298. The cubic root of 40212490 is about 342.5997081255.

Adding to 40212490 its reverse (9421204), we get a palindrome (49633694).

The spelling of 40212490 in words is "forty million, two hundred twelve thousand, four hundred ninety".