140139552 has 96 divisors (see below), whose sum is σ = 438746112. Its totient is φ = 38294784.

The previous prime is 140139541. The next prime is 140139557. The reversal of 140139552 is 255931041.

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

It is not an unprimeable number, because it can be changed into a prime (140139557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10923 + ... + 19989.

It is an arithmetic number, because the mean of its divisors is an integer number (4570272).

Almost surely, 2^140139552 is an apocalyptic number.

140139552 is a gapful number since it is divisible by the number (12) 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 140139552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219373056).

140139552 is an abundant number, since it is smaller than the sum of its proper divisors (298606560).

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

140139552 is a wasteful number, since it uses less digits than its factorization.

140139552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9110 (or 9102 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 140139552 is about 11838.0552456896. The cubic root of 140139552 is about 519.4218821618.

The spelling of 140139552 in words is "one hundred forty million, one hundred thirty-nine thousand, five hundred fifty-two".