303420139 has 24 divisors (see below), whose sum is σ = 353049840. Its totient is φ = 258552000.

The previous prime is 303420113. The next prime is 303420151. The reversal of 303420139 is 931024303.

It is a happy number.

It is not a de Polignac number, because 303420139 - 2²⁵ = 269865707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (303420179) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 432489 + ... + 433189.

It is an arithmetic number, because the mean of its divisors is an integer number (14710410).

Almost surely, 2^303420139 is an apocalyptic number.

303420139 is a deficient number, since it is larger than the sum of its proper divisors (49629701).

303420139 is a wasteful number, since it uses less digits than its factorization.

303420139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859 (or 840 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 303420139 is about 17418.9591824540. The cubic root of 303420139 is about 671.9672920529.

The spelling of 303420139 in words is "three hundred three million, four hundred twenty thousand, one hundred thirty-nine".