139244030 has 16 divisors (see below), whose sum is σ = 251450784. Its totient is φ = 55517280.

The previous prime is 139243999. The next prime is 139244041. The reversal of 139244030 is 30442931.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19277 + ... + 25496.

It is an arithmetic number, because the mean of its divisors is an integer number (15715674).

Almost surely, 2^139244030 is an apocalyptic number.

139244030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139244030 is a deficient number, since it is larger than the sum of its proper divisors (112206754).

139244030 is a wasteful number, since it uses less digits than its factorization.

139244030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45091.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 139244030 is about 11800.1707614763. The cubic root of 139244030 is about 518.3131110367.

Adding to 139244030 its reverse (30442931), we get a palindrome (169686961).

The spelling of 139244030 in words is "one hundred thirty-nine million, two hundred forty-four thousand, thirty".