140014421 has 4 divisors (see below), whose sum is σ = 140117772. Its totient is φ = 139911072.

The previous prime is 140014417. The next prime is 140014429. The reversal of 140014421 is 124410041.

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

It can be written as a sum of positive squares in 2 ways, for example, as 86285521 + 53728900 = 9289^2 + 7330^2 .

It is a cyclic number.

It is not a de Polignac number, because 140014421 - 2² = 140014417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 140014421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140014429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49616 + ... + 52361.

It is an arithmetic number, because the mean of its divisors is an integer number (35029443).

Almost surely, 2^140014421 is an apocalyptic number.

It is an amenable number.

140014421 is a deficient number, since it is larger than the sum of its proper divisors (103351).

140014421 is a wasteful number, since it uses less digits than its factorization.

140014421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103350.

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 140014421 is about 11832.7689489823. The cubic root of 140014421 is about 519.2672383724.

Adding to 140014421 its reverse (124410041), we get a palindrome (264424462).

The spelling of 140014421 in words is "one hundred forty million, fourteen thousand, four hundred twenty-one".