140181451 has 2 divisors, whose sum is σ = 140181452. Its totient is φ = 140181450.

The previous prime is 140181409. The next prime is 140181491. The reversal of 140181451 is 154181041.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140181451 - 2⁷ = 140181323 is a prime.

It is not a weakly prime, because it can be changed into another prime (140181491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70090725 + 70090726.

It is an arithmetic number, because the mean of its divisors is an integer number (70090726).

Almost surely, 2^140181451 is an apocalyptic number.

140181451 is a deficient number, since it is larger than the sum of its proper divisors (1).

140181451 is an equidigital number, since it uses as much as digits as its factorization.

140181451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 140181451 is about 11839.8247875549. The cubic root of 140181451 is about 519.4736426833.

The spelling of 140181451 in words is "one hundred forty million, one hundred eighty-one thousand, four hundred fifty-one".