140981520 has 160 divisors (see below), whose sum is σ = 471398400. Its totient is φ = 34739712.

The previous prime is 140981509. The next prime is 140981531. The reversal of 140981520 is 25189041.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (140981509) and next prime (140981531).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195721 + ... + 196439.

It is an arithmetic number, because the mean of its divisors is an integer number (2946240).

Almost surely, 2^140981520 is an apocalyptic number.

140981520 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 140981520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235699200).

140981520 is an abundant number, since it is smaller than the sum of its proper divisors (330416880).

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

140981520 is a wasteful number, since it uses less digits than its factorization.

140981520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797 (or 791 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 140981520 is about 11873.5639131644. The cubic root of 140981520 is about 520.4600465235.

The spelling of 140981520 in words is "one hundred forty million, nine hundred eighty-one thousand, five hundred twenty".