140724245 has 4 divisors (see below), whose sum is σ = 168869100. Its totient is φ = 112579392.

The previous prime is 140724239. The next prime is 140724271. The reversal of 140724245 is 542427041.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 84309124 + 56415121 = 9182^2 + 7511^2 .

It is a cyclic number.

It is not a de Polignac number, because 140724245 - 2¹⁰ = 140723221 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14072420 + ... + 14072429.

It is an arithmetic number, because the mean of its divisors is an integer number (42217275).

Almost surely, 2^140724245 is an apocalyptic number.

It is an amenable number.

140724245 is a deficient number, since it is larger than the sum of its proper divisors (28144855).

140724245 is an equidigital number, since it uses as much as digits as its factorization.

140724245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28144854.

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 140724245 is about 11862.7250242092. The cubic root of 140724245 is about 520.1432605772.

It can be divided in two parts, 1407 and 24245, that added together give a palindrome (25652).

The spelling of 140724245 in words is "one hundred forty million, seven hundred twenty-four thousand, two hundred forty-five".