140103252 has 18 divisors (see below), whose sum is σ = 354149978. Its totient is φ = 46701072.

The previous prime is 140103251. The next prime is 140103319. The reversal of 140103252 is 252301041.

It can be written as a sum of positive squares in only one way, i.e., 103306896 + 36796356 = 10164^2 + 6066^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140103251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1945843 + ... + 1945914.

Almost surely, 2^140103252 is an apocalyptic number.

140103252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

140103252 is an abundant number, since it is smaller than the sum of its proper divisors (214046726).

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

140103252 is a wasteful number, since it uses less digits than its factorization.

140103252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3891767 (or 3891762 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 140103252 is about 11836.5219553719. The cubic root of 140103252 is about 519.3770301024.

Adding to 140103252 its reverse (252301041), we get a palindrome (392404293).

The spelling of 140103252 in words is "one hundred forty million, one hundred three thousand, two hundred fifty-two".