140905451 has 2 divisors, whose sum is σ = 140905452. Its totient is φ = 140905450.

The previous prime is 140905421. The next prime is 140905481. The reversal of 140905451 is 154509041.

140905451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (140905421) and next prime (140905481).

It is a cyclic number.

It is not a de Polignac number, because 140905451 - 2¹⁰ = 140904427 is a prime.

It is a super-2 number, since 2×140905451² = 39708692243026802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (140905421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70452725 + 70452726.

It is an arithmetic number, because the mean of its divisors is an integer number (70452726).

Almost surely, 2^140905451 is an apocalyptic number.

140905451 is a deficient number, since it is larger than the sum of its proper divisors (1).

140905451 is an equidigital number, since it uses as much as digits as its factorization.

140905451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 29.

The square root of 140905451 is about 11870.3601883009. The cubic root of 140905451 is about 520.3664219641.

The spelling of 140905451 in words is "one hundred forty million, nine hundred five thousand, four hundred fifty-one".