139219128 has 64 divisors (see below), whose sum is σ = 394048800. Its totient is φ = 45527040.

The previous prime is 139219127. The next prime is 139219133. The reversal of 139219128 is 821912931.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 139219092 and 139219101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139219127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5368 + ... + 17528.

Almost surely, 2^139219128 is an apocalyptic number.

139219128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139219128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197024400).

139219128 is an abundant number, since it is smaller than the sum of its proper divisors (254829672).

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

139219128 is a wasteful number, since it uses less digits than its factorization.

139219128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12229 (or 12219 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 139219128 is about 11799.1155600748. The cubic root of 139219128 is about 518.2822113216.

The spelling of 139219128 in words is "one hundred thirty-nine million, two hundred nineteen thousand, one hundred twenty-eight".