140971451 has 2 divisors, whose sum is σ = 140971452. Its totient is φ = 140971450.

The previous prime is 140971409. The next prime is 140971499. The reversal of 140971451 is 154179041.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140971451 - 2²⁶ = 73862587 is a prime.

It is not a weakly prime, because it can be changed into another prime (140971151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70485725 + 70485726.

It is an arithmetic number, because the mean of its divisors is an integer number (70485726).

Almost surely, 2^140971451 is an apocalyptic number.

140971451 is a deficient number, since it is larger than the sum of its proper divisors (1).

140971451 is an equidigital number, since it uses as much as digits as its factorization.

140971451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 140971451 is about 11873.1398964217. The cubic root of 140971451 is about 520.4476556868.

The spelling of 140971451 in words is "one hundred forty million, nine hundred seventy-one thousand, four hundred fifty-one".