420902412678 has 96 divisors (see below), whose sum is σ = 1047477600000. Its totient is φ = 120803659200.

The previous prime is 420902412641. The next prime is 420902412709. The reversal of 420902412678 is 876214209024.

It is a super-2 number, since 2×420902412678² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18795048 + ... + 18817428.

It is an arithmetic number, because the mean of its divisors is an integer number (10911225000).

Almost surely, 2^420902412678 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420902412678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (523738800000).

420902412678 is an abundant number, since it is smaller than the sum of its proper divisors (626575187322).

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

420902412678 is a wasteful number, since it uses less digits than its factorization.

420902412678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27418 (or 27415 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 420902412678 in words is "four hundred twenty billion, nine hundred two million, four hundred twelve thousand, six hundred seventy-eight".