421257211676 has 24 divisors (see below), whose sum is σ = 847221217920. Its totient is φ = 179530206192.

The previous prime is 421257211673. The next prime is 421257211679. The reversal of 421257211676 is 676112752124.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (421257211673) and next prime (421257211679).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421257211673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42019850 + ... + 42029873.

It is an arithmetic number, because the mean of its divisors is an integer number (35300884080).

Almost surely, 2^421257211676 is an apocalyptic number.

It is an amenable number.

421257211676 is an abundant number, since it is smaller than the sum of its proper divisors (425964006244).

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

421257211676 is a wasteful number, since it uses less digits than its factorization.

421257211676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84049913 (or 84049911 counting only the distinct ones).

The product of its digits is 282240, while the sum is 44.

The spelling of 421257211676 in words is "four hundred twenty-one billion, two hundred fifty-seven million, two hundred eleven thousand, six hundred seventy-six".