140415252421 has 2 divisors, whose sum is σ = 140415252422. Its totient is φ = 140415252420.

The previous prime is 140415252413. The next prime is 140415252469. The reversal of 140415252421 is 124252514041.

140415252421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101521890625 + 38893361796 = 318625^2 + 197214^2 .

It is a cyclic number.

It is not a de Polignac number, because 140415252421 - 2³ = 140415252413 is a prime.

It is a super-2 number, since 2×140415252421² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140415232421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70207626210 + 70207626211.

It is an arithmetic number, because the mean of its divisors is an integer number (70207626211).

Almost surely, 2^140415252421 is an apocalyptic number.

It is an amenable number.

140415252421 is a deficient number, since it is larger than the sum of its proper divisors (1).

140415252421 is an equidigital number, since it uses as much as digits as its factorization.

140415252421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12800, while the sum is 31.

Adding to 140415252421 its reverse (124252514041), we get a palindrome (264667766462).

The spelling of 140415252421 in words is "one hundred forty billion, four hundred fifteen million, two hundred fifty-two thousand, four hundred twenty-one".