140021450501 has 8 divisors (see below), whose sum is σ = 140597663640. Its totient is φ = 139446058752.

The previous prime is 140021450483. The next prime is 140021450531. The reversal of 140021450501 is 105054120041.

It can be written as a sum of positive squares in 4 ways, for example, as 24727248001 + 115294202500 = 157249^2 + 339550^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140021450501 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140021450531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137465 + ... + 546753.

It is an arithmetic number, because the mean of its divisors is an integer number (17574707955).

Almost surely, 2^140021450501 is an apocalyptic number.

It is an amenable number.

140021450501 is a deficient number, since it is larger than the sum of its proper divisors (576213139).

140021450501 is a wasteful number, since it uses less digits than its factorization.

140021450501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410695.

The product of its (nonzero) digits is 800, while the sum is 23.

Adding to 140021450501 its reverse (105054120041), we get a palindrome (245075570542).

The spelling of 140021450501 in words is "one hundred forty billion, twenty-one million, four hundred fifty thousand, five hundred one".