139241428 has 24 divisors (see below), whose sum is σ = 246929760. Its totient is φ = 68695200.

The previous prime is 139241393. The next prime is 139241447. The reversal of 139241428 is 824142931.

It is a super-3 number, since 3×139241428³ (a number of 25 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 139241393 and 139241402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210963 + ... + 211621.

It is an arithmetic number, because the mean of its divisors is an integer number (10288740).

Almost surely, 2^139241428 is an apocalyptic number.

It is an amenable number.

139241428 is a deficient number, since it is larger than the sum of its proper divisors (107688332).

139241428 is a wasteful number, since it uses less digits than its factorization.

139241428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287 (or 1285 counting only the distinct ones).

The product of its digits is 13824, while the sum is 34.

The square root of 139241428 is about 11800.0605083194. The cubic root of 139241428 is about 518.3098825102.

The spelling of 139241428 in words is "one hundred thirty-nine million, two hundred forty-one thousand, four hundred twenty-eight".