421446755 has 4 divisors (see below), whose sum is σ = 505736112. Its totient is φ = 337157400.

The previous prime is 421446737. The next prime is 421446757. The reversal of 421446755 is 557644124.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 421446755 - 2²⁶ = 354337891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421446757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42144671 + ... + 42144680.

It is an arithmetic number, because the mean of its divisors is an integer number (126434028).

Almost surely, 2^421446755 is an apocalyptic number.

421446755 is a deficient number, since it is larger than the sum of its proper divisors (84289357).

421446755 is an equidigital number, since it uses as much as digits as its factorization.

421446755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84289356.

The product of its digits is 134400, while the sum is 38.

The square root of 421446755 is about 20529.1683952371. The cubic root of 421446755 is about 749.7461392679.

The spelling of 421446755 in words is "four hundred twenty-one million, four hundred forty-six thousand, seven hundred fifty-five".