140205451 has 2 divisors, whose sum is σ = 140205452. Its totient is φ = 140205450.

The previous prime is 140205433. The next prime is 140205497. The reversal of 140205451 is 154502041.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 140205451 - 2⁵ = 140205419 is a prime.

It is a super-2 number, since 2×140205451² = 39315136980226802, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140205431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70102725 + 70102726.

It is an arithmetic number, because the mean of its divisors is an integer number (70102726).

Almost surely, 2^140205451 is an apocalyptic number.

140205451 is a deficient number, since it is larger than the sum of its proper divisors (1).

140205451 is an equidigital number, since it uses as much as digits as its factorization.

140205451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 140205451 is about 11840.8382726900. The cubic root of 140205451 is about 519.5032867765.

Adding to 140205451 its reverse (154502041), we get a palindrome (294707492).

The spelling of 140205451 in words is "one hundred forty million, two hundred five thousand, four hundred fifty-one".