40240021210 has 16 divisors (see below), whose sum is σ = 72660536136. Its totient is φ = 16045231168.

The previous prime is 40240021183. The next prime is 40240021249. The reversal of 40240021210 is 1212004204.

It can be written as a sum of positive squares in 4 ways, for example, as 28780104609 + 11459916601 = 169647^2 + 107051^2 .

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, 6343837 + ... + 6350176.

Almost surely, 2^40240021210 is an apocalyptic number.

40240021210 is a deficient number, since it is larger than the sum of its proper divisors (32420514926).

40240021210 is a wasteful number, since it uses less digits than its factorization.

40240021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12694337.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 40240021210 its reverse (1212004204), we get a palindrome (41452025414).

The spelling of 40240021210 in words is "forty billion, two hundred forty million, twenty-one thousand, two hundred ten".