140040025040 has 40 divisors (see below), whose sum is σ = 325656675240. Its totient is φ = 56005065216.

The previous prime is 140040025031. The next prime is 140040025051. The reversal of 140040025040 is 40520040041.

It can be written as a sum of positive squares in 4 ways, for example, as 5289361984 + 134750663056 = 72728^2 + 367084^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×140040025040² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 247346 + ... + 584174.

It is an arithmetic number, because the mean of its divisors is an integer number (8141416881).

Almost surely, 2^140040025040 is an apocalyptic number.

140040025040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140040025040 is an abundant number, since it is smaller than the sum of its proper divisors (185616650200).

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

140040025040 is a wasteful number, since it uses less digits than its factorization.

140040025040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342039 (or 342033 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 140040025040 its reverse (40520040041), we get a palindrome (180560065081).

The spelling of 140040025040 in words is "one hundred forty billion, forty million, twenty-five thousand, forty".