140570621 has 2 divisors, whose sum is σ = 140570622. Its totient is φ = 140570620.

The previous prime is 140570597. The next prime is 140570629. The reversal of 140570621 is 126075041.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 97812100 + 42758521 = 9890^2 + 6539^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140570621 is a prime.

It is a super-3 number, since 3×140570621³ (a number of 25 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140570629) 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, 70285310 + 70285311.

It is an arithmetic number, because the mean of its divisors is an integer number (70285311).

Almost surely, 2^140570621 is an apocalyptic number.

It is an amenable number.

140570621 is a deficient number, since it is larger than the sum of its proper divisors (1).

140570621 is an equidigital number, since it uses as much as digits as its factorization.

140570621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 140570621 is about 11856.2481839746. The cubic root of 140570621 is about 519.9539172673.

The spelling of 140570621 in words is "one hundred forty million, five hundred seventy thousand, six hundred twenty-one".