1140420200421 has 4 divisors (see below), whose sum is σ = 1520560267232. Its totient is φ = 760280133612.

The previous prime is 1140420200393. The next prime is 1140420200429. The reversal of 1140420200421 is 1240020240411.

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.

It is not a de Polignac number, because 1140420200421 - 2⁵ = 1140420200389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140420200429) 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, 190070033401 + ... + 190070033406.

It is an arithmetic number, because the mean of its divisors is an integer number (380140066808).

Almost surely, 2^{1140420200421} is an apocalyptic number.

It is an amenable number.

1140420200421 is a deficient number, since it is larger than the sum of its proper divisors (380140066811).

1140420200421 is an equidigital number, since it uses as much as digits as its factorization.

1140420200421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380140066810.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 1140420200421 its reverse (1240020240411), we get a palindrome (2380440440832).

The spelling of 1140420200421 in words is "one trillion, one hundred forty billion, four hundred twenty million, two hundred thousand, four hundred twenty-one".