140400053 has 4 divisors (see below), whose sum is σ = 141211788. Its totient is φ = 139588320.

The previous prime is 140400047. The next prime is 140400067. The reversal of 140400053 is 350004041.

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 106956964 + 33443089 = 10342^2 + 5783^2 .

It is a cyclic number.

It is not a de Polignac number, because 140400053 - 2⁴ = 140400037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140400083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 405608 + ... + 405953.

It is an arithmetic number, because the mean of its divisors is an integer number (35302947).

Almost surely, 2^140400053 is an apocalyptic number.

It is an amenable number.

140400053 is a deficient number, since it is larger than the sum of its proper divisors (811735).

140400053 is an equidigital number, since it uses as much as digits as its factorization.

140400053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811734.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 140400053 is about 11849.0528313448. The cubic root of 140400053 is about 519.7435286044.

Adding to 140400053 its reverse (350004041), we get a palindrome (490404094).

The spelling of 140400053 in words is "one hundred forty million, four hundred thousand, fifty-three".