140215427 has 8 divisors (see below), whose sum is σ = 153048000. Its totient is φ = 127397160.

The previous prime is 140215409. The next prime is 140215477. The reversal of 140215427 is 724512041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140215427 - 2⁶ = 140215363 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140215396 and 140215405.

It is not an unprimeable number, because it can be changed into a prime (140215477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36668 + ... + 40310.

It is an arithmetic number, because the mean of its divisors is an integer number (19131000).

Almost surely, 2^140215427 is an apocalyptic number.

140215427 is a deficient number, since it is larger than the sum of its proper divisors (12832573).

140215427 is a wasteful number, since it uses less digits than its factorization.

140215427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7153.

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 140215427 is about 11841.2595191559. The cubic root of 140215427 is about 519.5156078425.

Adding to 140215427 its reverse (724512041), we get a palindrome (864727468).

The spelling of 140215427 in words is "one hundred forty million, two hundred fifteen thousand, four hundred twenty-seven".