140269421 has 2 divisors, whose sum is σ = 140269422. Its totient is φ = 140269420.

The previous prime is 140269411. The next prime is 140269463. The reversal of 140269421 is 124962041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80748196 + 59521225 = 8986^2 + 7715^2 .

It is an emirp because it is prime and its reverse (124962041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140269421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140269411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70134710 + 70134711.

It is an arithmetic number, because the mean of its divisors is an integer number (70134711).

Almost surely, 2^140269421 is an apocalyptic number.

It is an amenable number.

140269421 is a deficient number, since it is larger than the sum of its proper divisors (1).

140269421 is an equidigital number, since it uses as much as digits as its factorization.

140269421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 140269421 is about 11843.5392092060. The cubic root of 140269421 is about 519.5822841147.

The spelling of 140269421 in words is "one hundred forty million, two hundred sixty-nine thousand, four hundred twenty-one".