140304134921 has 4 divisors (see below), whose sum is σ = 140315896644. Its totient is φ = 140292373200.

The previous prime is 140304134909. The next prime is 140304134933. The reversal of 140304134921 is 129431403041.

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

It is an interprime number because it is at equal distance from previous prime (140304134909) and next prime (140304134933).

It can be written as a sum of positive squares in 2 ways, for example, as 24864559225 + 115439575696 = 157685^2 + 339764^2 .

It is a cyclic number.

It is not a de Polignac number, because 140304134921 - 2⁶ = 140304134857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140304134941) 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, 5862950 + ... + 5886831.

It is an arithmetic number, because the mean of its divisors is an integer number (35078974161).

Almost surely, 2^140304134921 is an apocalyptic number.

It is an amenable number.

140304134921 is a deficient number, since it is larger than the sum of its proper divisors (11761723).

140304134921 is a wasteful number, since it uses less digits than its factorization.

140304134921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11761722.

The product of its (nonzero) digits is 10368, while the sum is 32.

Adding to 140304134921 its reverse (129431403041), we get a palindrome (269735537962).

The spelling of 140304134921 in words is "one hundred forty billion, three hundred four million, one hundred thirty-four thousand, nine hundred twenty-one".