139240010 has 64 divisors (see below), whose sum is σ = 314399232. Its totient is φ = 43220736.

The previous prime is 139240009. The next prime is 139240019. The reversal of 139240010 is 10042931.

It is not an unprimeable number, because it can be changed into a prime (139240019) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46787 + ... + 49673.

It is an arithmetic number, because the mean of its divisors is an integer number (4912488).

Almost surely, 2^139240010 is an apocalyptic number.

139240010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139240010 is an abundant number, since it is smaller than the sum of its proper divisors (175159222).

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

139240010 is a wasteful number, since it uses less digits than its factorization.

139240010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2967.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 139240010 is about 11800.0004237288. Note that the first 3 decimals coincide. The cubic root of 139240010 is about 518.3081230580.

Adding to 139240010 its reverse (10042931), we get a palindrome (149282941).

The spelling of 139240010 in words is "one hundred thirty-nine million, two hundred forty thousand, ten".