421013040040 has 64 divisors (see below), whose sum is σ = 953549686800. Its totient is φ = 167291025408.

The previous prime is 421013040023. The next prime is 421013040109. The reversal of 421013040040 is 40040310124.

It can be written as a sum of positive squares in 8 ways, for example, as 290889792964 + 130123247076 = 539342^2 + 360726^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42881212 + ... + 42891028.

Almost surely, 2^421013040040 is an apocalyptic number.

421013040040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421013040040 is an abundant number, since it is smaller than the sum of its proper divisors (532536646760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421013040040 is a wasteful number, since it uses less digits than its factorization.

421013040040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16814 (or 16810 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 421013040040 its reverse (40040310124), we get a palindrome (461053350164).

The spelling of 421013040040 in words is "four hundred twenty-one billion, thirteen million, forty thousand, forty".