140007840 has 96 divisors (see below), whose sum is σ = 504040320. Its totient is φ = 32001024.

The previous prime is 140007839. The next prime is 140007859. The reversal of 140007840 is 48700041.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-3 number, since 3×140007840³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 140007840.

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, 17475 + ... + 24194.

It is an arithmetic number, because the mean of its divisors is an integer number (5250420).

Almost surely, 2^140007840 is an apocalyptic number.

140007840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140007840 is an abundant number, since it is smaller than the sum of its proper divisors (364032480).

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

140007840 is a wasteful number, since it uses less digits than its factorization.

140007840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41694 (or 41686 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 140007840 is about 11832.4908620290. The cubic root of 140007840 is about 519.2591026598.

Adding to 140007840 its reverse (48700041), we get a palindrome (188707881).

The spelling of 140007840 in words is "one hundred forty million, seven thousand, eight hundred forty".