303421140 has 120 divisors (see below), whose sum is σ = 1038435552. Its totient is φ = 73552320.

The previous prime is 303421133. The next prime is 303421163. The reversal of 303421140 is 41124303.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9307 + ... + 26333.

Almost surely, 2^303421140 is an apocalyptic number.

303421140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 303421140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (519217776).

303421140 is an abundant number, since it is smaller than the sum of its proper divisors (735014412).

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

303421140 is a wasteful number, since it uses less digits than its factorization.

303421140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17059 (or 17048 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 303421140 is about 17418.9879154904. The cubic root of 303421140 is about 671.9680310047.

Adding to 303421140 its reverse (41124303), we get a palindrome (344545443).

The spelling of 303421140 in words is "three hundred three million, four hundred twenty-one thousand, one hundred forty".