140155440042520 has 256 divisors, whose sum is σ = 383107874688000. Its totient is φ = 45048194924544.

The previous prime is 140155440042437. The next prime is 140155440042539. The reversal of 140155440042520 is 25240044551041.

It is a self number, because there is not a number n which added to its sum of digits gives 140155440042520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1387256247 + ... + 1387357273.

It is an arithmetic number, because the mean of its divisors is an integer number (1496515135500).

Almost surely, 2^{140155440042520} is an apocalyptic number.

140155440042520 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 140155440042520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191553937344000).

140155440042520 is an abundant number, since it is smaller than the sum of its proper divisors (242952434645480).

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

140155440042520 is a wasteful number, since it uses less digits than its factorization.

140155440042520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102210 (or 102206 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 37.

Adding to 140155440042520 its reverse (25240044551041), we get a palindrome (165395484593561).

The spelling of 140155440042520 in words is "one hundred forty trillion, one hundred fifty-five billion, four hundred forty million, forty-two thousand, five hundred twenty".