421674156 has 18 divisors (see below), whose sum is σ = 1065898652. Its totient is φ = 140558040.

The previous prime is 421674133. The next prime is 421674167. The reversal of 421674156 is 651476124.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 11713171 = 421674156 / (4 + 2 + 1 + 6 + 7 + 4 + 1 + 5 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 421674156.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5856550 + ... + 5856621.

Almost surely, 2^421674156 is an apocalyptic number.

It is an amenable number.

421674156 is an abundant number, since it is smaller than the sum of its proper divisors (644224496).

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

421674156 is a wasteful number, since it uses less digits than its factorization.

421674156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11713181 (or 11713176 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 421674156 is about 20534.7061337629. The cubic root of 421674156 is about 749.8809624411.

The spelling of 421674156 in words is "four hundred twenty-one million, six hundred seventy-four thousand, one hundred fifty-six".