139771230 has 32 divisors (see below), whose sum is σ = 350037504. Its totient is φ = 35651616.

The previous prime is 139771217. The next prime is 139771241. The reversal of 139771230 is 32177931.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 139771191 and 139771200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100594 + ... + 101973.

It is an arithmetic number, because the mean of its divisors is an integer number (10938672).

Almost surely, 2^139771230 is an apocalyptic number.

139771230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139771230 is an abundant number, since it is smaller than the sum of its proper divisors (210266274).

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

139771230 is a wasteful number, since it uses less digits than its factorization.

139771230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202600.

The product of its (nonzero) digits is 7938, while the sum is 33.

The square root of 139771230 is about 11822.4883167631. The cubic root of 139771230 is about 518.9664257817.

It can be divided in two parts, 1397 and 71230, that added together give a palindrome (72627).

The spelling of 139771230 in words is "one hundred thirty-nine million, seven hundred seventy-one thousand, two hundred thirty".