140427451 has 4 divisors (see below), whose sum is σ = 142119432. Its totient is φ = 138735472.

The previous prime is 140427449. The next prime is 140427457. The reversal of 140427451 is 154724041.

140427451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140427451 - 2¹ = 140427449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140427457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 845866 + ... + 846031.

It is an arithmetic number, because the mean of its divisors is an integer number (35529858).

Almost surely, 2^140427451 is an apocalyptic number.

140427451 is a deficient number, since it is larger than the sum of its proper divisors (1691981).

140427451 is an equidigital number, since it uses as much as digits as its factorization.

140427451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691980.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 140427451 is about 11850.2089011123. The cubic root of 140427451 is about 519.7773344012. Note that the first 3 decimals are identical.

The spelling of 140427451 in words is "one hundred forty million, four hundred twenty-seven thousand, four hundred fifty-one".