140345252 has 6 divisors (see below), whose sum is σ = 245604198. Its totient is φ = 70172624.

The previous prime is 140345213. The next prime is 140345263. The reversal of 140345252 is 252543041.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 125798656 + 14546596 = 11216^2 + 3814^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17543153 + ... + 17543160.

It is an arithmetic number, because the mean of its divisors is an integer number (40934033).

Almost surely, 2^140345252 is an apocalyptic number.

It is an amenable number.

140345252 is a deficient number, since it is larger than the sum of its proper divisors (105258946).

140345252 is a wasteful number, since it uses less digits than its factorization.

140345252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35086317 (or 35086315 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 140345252 is about 11846.7401423345. The cubic root of 140345252 is about 519.6758976430.

Adding to 140345252 its reverse (252543041), we get a palindrome (392888293).

The spelling of 140345252 in words is "one hundred forty million, three hundred forty-five thousand, two hundred fifty-two".