140200421 has 8 divisors (see below), whose sum is σ = 141243264. Its totient is φ = 139161760.

The previous prime is 140200399. The next prime is 140200429. The reversal of 140200421 is 124002041.

140200421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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-140200421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140200396 and 140200405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140200429) 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, 97121 + ... + 98553.

It is an arithmetic number, because the mean of its divisors is an integer number (17655408).

Almost surely, 2^140200421 is an apocalyptic number.

It is an amenable number.

140200421 is a deficient number, since it is larger than the sum of its proper divisors (1042843).

140200421 is a wasteful number, since it uses less digits than its factorization.

140200421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 140200421 is about 11840.6258702824. The cubic root of 140200421 is about 519.4970741488.

Adding to 140200421 its reverse (124002041), we get a palindrome (264202462).

The spelling of 140200421 in words is "one hundred forty million, two hundred thousand, four hundred twenty-one".