140421053 has 2 divisors, whose sum is σ = 140421054. Its totient is φ = 140421052.

The previous prime is 140420993. The next prime is 140421107. The reversal of 140421053 is 350124041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127193284 + 13227769 = 11278^2 + 3637^2 .

It is a cyclic number.

It is not a de Polignac number, because 140421053 - 2¹⁶ = 140355517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140421653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70210526 + 70210527.

It is an arithmetic number, because the mean of its divisors is an integer number (70210527).

Almost surely, 2^140421053 is an apocalyptic number.

It is an amenable number.

140421053 is a deficient number, since it is larger than the sum of its proper divisors (1).

140421053 is an equidigital number, since it uses as much as digits as its factorization.

140421053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 140421053 is about 11849.9389449904. The cubic root of 140421053 is about 519.7694404416.

Adding to 140421053 its reverse (350124041), we get a palindrome (490545094).

The spelling of 140421053 in words is "one hundred forty million, four hundred twenty-one thousand, fifty-three".