421120313 has 4 divisors (see below), whose sum is σ = 443284560. Its totient is φ = 398956068.

The previous prime is 421120309. The next prime is 421120319. The reversal of 421120313 is 313021124.

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 421120313 - 2² = 421120309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421120291 and 421120300.

It is not an unprimeable number, because it can be changed into a prime (421120319) 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, 11082095 + ... + 11082132.

It is an arithmetic number, because the mean of its divisors is an integer number (110821140).

Almost surely, 2^421120313 is an apocalyptic number.

It is an amenable number.

421120313 is a deficient number, since it is larger than the sum of its proper divisors (22164247).

421120313 is a wasteful number, since it uses less digits than its factorization.

421120313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22164246.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 421120313 is about 20521.2161676641. The cubic root of 421120313 is about 749.5525111321.

Adding to 421120313 its reverse (313021124), we get a palindrome (734141437).

The spelling of 421120313 in words is "four hundred twenty-one million, one hundred twenty thousand, three hundred thirteen".