421971466140 has 192 divisors, whose sum is σ = 1540893312000. Its totient is φ = 93843816192.

The previous prime is 421971466123. The next prime is 421971466183. The reversal of 421971466140 is 41664179124.

421971466140 is a `hidden beast` number, since 4 + 2 + 19 + 7 + 14 + 6 + 614 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1368690 + ... + 1648409.

It is an arithmetic number, because the mean of its divisors is an integer number (8025486000).

Almost surely, 2^421971466140 is an apocalyptic number.

It is an amenable number.

421971466140 is an abundant number, since it is smaller than the sum of its proper divisors (1118921845860).

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

421971466140 is a wasteful number, since it uses less digits than its factorization.

421971466140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017161 (or 3017153 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 421971466140 in words is "four hundred twenty-one billion, nine hundred seventy-one million, four hundred sixty-six thousand, one hundred forty".