140000000 has 144 divisors (see below), whose sum is σ = 399217728. Its totient is φ = 48000000.

The previous prime is 139999991. The next prime is 140000041. The reversal of 140000000 is 41.

It is a Harshad number since it is a multiple of its sum of digits (5).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

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, 19999997 + ... + 20000003.

Almost surely, 2^140000000 is an apocalyptic number.

140000000 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 140000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199608864).

140000000 is an abundant number, since it is smaller than the sum of its proper divisors (259217728).

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

140000000 is an frugal number, since it uses more digits than its factorization.

140000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58 (or 14 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 5.

The square root of 140000000 is about 11832.1595661992. The cubic root of 140000000 is about 519.2494101851.

Adding to 140000000 its reverse (41), we get a palindrome (140000041).

The spelling of 140000000 in words is "one hundred forty million", and thus it is an aban number.