203420139 has 8 divisors (see below), whose sum is σ = 292090512. Its totient is φ = 125181600.

The previous prime is 203420131. The next prime is 203420153. The reversal of 203420139 is 931024302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 203420139 - 2³ = 203420131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203420131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2607912 + ... + 2607989.

It is an arithmetic number, because the mean of its divisors is an integer number (36511314).

Almost surely, 2^203420139 is an apocalyptic number.

203420139 is a deficient number, since it is larger than the sum of its proper divisors (88670373).

203420139 is a wasteful number, since it uses less digits than its factorization.

203420139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5215917.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 203420139 is about 14262.5432164113. The cubic root of 203420139 is about 588.1182400238.

The spelling of 203420139 in words is "two hundred three million, four hundred twenty thousand, one hundred thirty-nine".