139071240 has 384 divisors, whose sum is σ = 586310400. Its totient is φ = 27740160.

The previous prime is 139071209. The next prime is 139071259. The reversal of 139071240 is 42170931.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 803794 + ... + 803966.

It is an arithmetic number, because the mean of its divisors is an integer number (1526850).

Almost surely, 2^139071240 is an apocalyptic number.

139071240 is a gapful number since it is divisible by the number (10) 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 139071240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (293155200).

139071240 is an abundant number, since it is smaller than the sum of its proper divisors (447239160).

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

139071240 is a wasteful number, since it uses less digits than its factorization.

139071240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 230 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 139071240 is about 11792.8469845072. The cubic root of 139071240 is about 518.0986281293.

The spelling of 139071240 in words is "one hundred thirty-nine million, seventy-one thousand, two hundred forty".