140411521 has 2 divisors, whose sum is σ = 140411522. Its totient is φ = 140411520.

The previous prime is 140411497. The next prime is 140411543. The reversal of 140411521 is 125114041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118919025 + 21492496 = 10905^2 + 4636^2 .

It is a cyclic number.

It is not a de Polignac number, because 140411521 - 2⁷ = 140411393 is a prime.

It is not a weakly prime, because it can be changed into another prime (140411221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70205760 + 70205761.

It is an arithmetic number, because the mean of its divisors is an integer number (70205761).

Almost surely, 2^140411521 is an apocalyptic number.

It is an amenable number.

140411521 is a deficient number, since it is larger than the sum of its proper divisors (1).

140411521 is an equidigital number, since it uses as much as digits as its factorization.

140411521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 140411521 is about 11849.5367419997. The cubic root of 140411521 is about 519.7576792555.

Adding to 140411521 its reverse (125114041), we get a palindrome (265525562).

The spelling of 140411521 in words is "one hundred forty million, four hundred eleven thousand, five hundred twenty-one".