421768074 has 64 divisors (see below), whose sum is σ = 1042272000. Its totient is φ = 110799360.

The previous prime is 421768073. The next prime is 421768121. The reversal of 421768074 is 470867124.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (421768073) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 152052 + ... + 154800.

It is an arithmetic number, because the mean of its divisors is an integer number (16285500).

Almost surely, 2^421768074 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421768074, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (521136000).

421768074 is an abundant number, since it is smaller than the sum of its proper divisors (620503926).

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

421768074 is a wasteful number, since it uses less digits than its factorization.

421768074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 421768074 is about 20536.9928178397. The cubic root of 421768074 is about 749.9366310904.

The spelling of 421768074 in words is "four hundred twenty-one million, seven hundred sixty-eight thousand, seventy-four".