140502001 has 4 divisors (see below), whose sum is σ = 140588452. Its totient is φ = 140415552.

The previous prime is 140501983. The next prime is 140502007. The reversal of 140502001 is 100205041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100205041 = 6619 ⋅15139.

It can be written as a sum of positive squares in 2 ways, for example, as 91221601 + 49280400 = 9551^2 + 7020^2 .

It is a cyclic number.

It is not a de Polignac number, because 140502001 - 2⁹ = 140501489 is a prime.

It is a super-3 number, since 3×140502001³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140502007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40740 + ... + 44053.

It is an arithmetic number, because the mean of its divisors is an integer number (35147113).

Almost surely, 2^140502001 is an apocalyptic number.

It is an amenable number.

140502001 is a deficient number, since it is larger than the sum of its proper divisors (86451).

140502001 is an equidigital number, since it uses as much as digits as its factorization.

140502001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86450.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 140502001 is about 11853.3539979197. The cubic root of 140502001 is about 519.8692977720.

Adding to 140502001 its reverse (100205041), we get a palindrome (240707042).

The spelling of 140502001 in words is "one hundred forty million, five hundred two thousand, one".