303420138 has 16 divisors (see below), whose sum is σ = 693531840. Its totient is φ = 86691456.

The previous prime is 303420113. The next prime is 303420151. The reversal of 303420138 is 831024303.

It is a Curzon 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, 3612103 + ... + 3612186.

It is an arithmetic number, because the mean of its divisors is an integer number (43345740).

Almost surely, 2^303420138 is an apocalyptic number.

303420138 is an abundant number, since it is smaller than the sum of its proper divisors (390111702).

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

303420138 is a wasteful number, since it uses less digits than its factorization.

303420138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7224301.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 303420138 is about 17418.9591537497. The cubic root of 303420138 is about 671.9672913147.

The spelling of 303420138 in words is "three hundred three million, four hundred twenty thousand, one hundred thirty-eight".