140424481 has 4 divisors (see below), whose sum is σ = 140513472. Its totient is φ = 140335492.

The previous prime is 140424419. The next prime is 140424491. The reversal of 140424481 is 184424041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 184424041 = 17 ⋅10848473.

It is a cyclic number.

It is not a de Polignac number, because 140424481 - 2⁷ = 140424353 is a prime.

It is a super-2 number, since 2×140424481² = 39438069728238722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140424491) 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, 42085 + ... + 45298.

It is an arithmetic number, because the mean of its divisors is an integer number (35128368).

Almost surely, 2^140424481 is an apocalyptic number.

It is an amenable number.

140424481 is a deficient number, since it is larger than the sum of its proper divisors (88991).

140424481 is an equidigital number, since it uses as much as digits as its factorization.

140424481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88990.

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 140424481 is about 11850.0835862031. The cubic root of 140424481 is about 519.7736699953.

The spelling of 140424481 in words is "one hundred forty million, four hundred twenty-four thousand, four hundred eighty-one".