421340299 has 4 divisors (see below), whose sum is σ = 428481720. Its totient is φ = 414198880.

The previous prime is 421340281. The next prime is 421340317. The reversal of 421340299 is 992043124.

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

It is an interprime number because it is at equal distance from previous prime (421340281) and next prime (421340317).

It is not a de Polignac number, because 421340299 - 2⁵ = 421340267 is a prime.

It is a super-2 number, since 2×421340299² = 355055295122818802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421340209) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 3570622 + ... + 3570739.

It is an arithmetic number, because the mean of its divisors is an integer number (107120430).

Almost surely, 2^421340299 is an apocalyptic number.

421340299 is a deficient number, since it is larger than the sum of its proper divisors (7141421).

421340299 is an equidigital number, since it uses as much as digits as its factorization.

421340299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7141420.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 421340299 is about 20526.5754328383. The cubic root of 421340299 is about 749.6830061869.

The spelling of 421340299 in words is "four hundred twenty-one million, three hundred forty thousand, two hundred ninety-nine".