303442140 has 24 divisors (see below), whose sum is σ = 849638160. Its totient is φ = 80917888.

The previous prime is 303442039. The next prime is 303442159. The reversal of 303442140 is 41244303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2528625 + ... + 2528744.

It is an arithmetic number, because the mean of its divisors is an integer number (35401590).

Almost surely, 2^303442140 is an apocalyptic number.

303442140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

303442140 is an abundant number, since it is smaller than the sum of its proper divisors (546196020).

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

303442140 is a wasteful number, since it uses less digits than its factorization.

303442140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5057381 (or 5057379 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 303442140 is about 17419.5906955359. The cubic root of 303442140 is about 671.9835331141.

Adding to 303442140 its reverse (41244303), we get a palindrome (344686443).

The spelling of 303442140 in words is "three hundred three million, four hundred forty-two thousand, one hundred forty".