139770 has 24 divisors (see below), whose sum is σ = 363636. Its totient is φ = 37248.

The previous prime is 139759. The next prime is 139787. The reversal of 139770 is 77931.

139770 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 127449 + 12321 = 357^2 + 111^2 .

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139770.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 687 + ... + 866.

2¹³⁹⁷⁷⁰ is an apocalyptic number.

139770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139770 is an abundant number, since it is smaller than the sum of its proper divisors (223866).

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

139770 is a wasteful number, since it uses less digits than its factorization.

139770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1566 (or 1563 counting only the distinct ones).

The product of its (nonzero) digits is 1323, while the sum is 27.

The square root of 139770 is about 373.8582619122. The cubic root of 139770 is about 51.8964903459.

It can be divided in two parts, 139 and 770, that added together give a palindrome (909).

The spelling of 139770 in words is "one hundred thirty-nine thousand, seven hundred seventy".