421674012 has 84 divisors (see below), whose sum is σ = 1133694576. Its totient is φ = 137090880.

The previous prime is 421673999. The next prime is 421674013. The reversal of 421674012 is 210476124.

It is a super-2 number, since 2×421674012² = 355617944792352288, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421674013) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 117793 + ... + 121319.

It is an arithmetic number, because the mean of its divisors is an integer number (13496364).

Almost surely, 2^421674012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421674012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (566847288).

421674012 is an abundant number, since it is smaller than the sum of its proper divisors (712020564).

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

421674012 is a wasteful number, since it uses less digits than its factorization.

421674012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3590 (or 3573 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 421674012 is about 20534.7026275035. The cubic root of 421674012 is about 749.8808770806.

The spelling of 421674012 in words is "four hundred twenty-one million, six hundred seventy-four thousand, twelve".