303542140 has 96 divisors (see below), whose sum is σ = 741472704. Its totient is φ = 103157760.

The previous prime is 303542137. The next prime is 303542143. The reversal of 303542140 is 41245303.

It is an interprime number because it is at equal distance from previous prime (303542137) and next prime (303542143).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (303542143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1035834 + ... + 1036126.

It is an arithmetic number, because the mean of its divisors is an integer number (7723674).

Almost surely, 2^303542140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 303542140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (370736352).

303542140 is an abundant number, since it is smaller than the sum of its proper divisors (437930564).

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

303542140 is a wasteful number, since it uses less digits than its factorization.

303542140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607 (or 605 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 303542140 is about 17422.4607906002. The cubic root of 303542140 is about 672.0573428722.

Adding to 303542140 its reverse (41245303), we get a palindrome (344787443).

The spelling of 303542140 in words is "three hundred three million, five hundred forty-two thousand, one hundred forty".