421401101042040 has 128 divisors (see below), whose sum is σ = 1465153124152320. Its totient is φ = 94963628390400.

The previous prime is 421401101041979. The next prime is 421401101042069. The reversal of 421401101042040 is 40240101104124.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 421401101042040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3532813441 + ... + 3532932720.

It is an arithmetic number, because the mean of its divisors is an integer number (11446508782440).

Almost surely, 2^{421401101042040} is an apocalyptic number.

421401101042040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

421401101042040 is an abundant number, since it is smaller than the sum of its proper divisors (1043752023110280).

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

421401101042040 is a wasteful number, since it uses less digits than its factorization.

421401101042040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7065746253 (or 7065746249 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 421401101042040 its reverse (40240101104124), we get a palindrome (461641202146164).

The spelling of 421401101042040 in words is "four hundred twenty-one trillion, four hundred one billion, one hundred one million, forty-two thousand, forty".