1141755421 has 4 divisors (see below), whose sum is σ = 1148063644. Its totient is φ = 1135447200.

The previous prime is 1141755371. The next prime is 1141755449. The reversal of 1141755421 is 1245571411.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 542191225 + 599564196 = 23285^2 + 24486^2 .

It is a cyclic number.

It is not a de Polignac number, because 1141755421 - 2¹⁷ = 1141624349 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 (1141755821) 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, 3153840 + ... + 3154201.

It is an arithmetic number, because the mean of its divisors is an integer number (287015911).

Almost surely, 2^1141755421 is an apocalyptic number.

It is an amenable number.

1141755421 is a deficient number, since it is larger than the sum of its proper divisors (6308223).

1141755421 is an equidigital number, since it uses as much as digits as its factorization.

1141755421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6308222.

The product of its digits is 5600, while the sum is 31.

The square root of 1141755421 is about 33789.8715741863. The cubic root of 1141755421 is about 1045.1798477117.

The spelling of 1141755421 in words is "one billion, one hundred forty-one million, seven hundred fifty-five thousand, four hundred twenty-one".