421146753 has 4 divisors (see below), whose sum is σ = 561529008. Its totient is φ = 280764500.

The previous prime is 421146707. The next prime is 421146823. The reversal of 421146753 is 357641124.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 421146753 - 2⁹ = 421146241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421146553) 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, 70191123 + ... + 70191128.

It is an arithmetic number, because the mean of its divisors is an integer number (140382252).

Almost surely, 2^421146753 is an apocalyptic number.

It is an amenable number.

421146753 is a deficient number, since it is larger than the sum of its proper divisors (140382255).

421146753 is a wasteful number, since it uses less digits than its factorization.

421146753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140382254.

The product of its digits is 20160, while the sum is 33.

The square root of 421146753 is about 20521.8603688847. The cubic root of 421146753 is about 749.5681976656.

Adding to 421146753 its reverse (357641124), we get a palindrome (778787877).

The spelling of 421146753 in words is "four hundred twenty-one million, one hundred forty-six thousand, seven hundred fifty-three".