1204555141 has 4 divisors (see below), whose sum is σ = 1267952800. Its totient is φ = 1141157484.

The previous prime is 1204555133. The next prime is 1204555169. The reversal of 1204555141 is 1415554021.

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 a cyclic number.

It is not a de Polignac number, because 1204555141 - 2³ = 1204555133 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 (1204559141) 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, 31698801 + ... + 31698838.

It is an arithmetic number, because the mean of its divisors is an integer number (316988200).

Almost surely, 2^1204555141 is an apocalyptic number.

It is an amenable number.

1204555141 is a deficient number, since it is larger than the sum of its proper divisors (63397659).

1204555141 is an equidigital number, since it uses as much as digits as its factorization.

1204555141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63397658.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 1204555141 is about 34706.7016727317. The cubic root of 1204555141 is about 1064.0014713102.

The spelling of 1204555141 in words is "one billion, two hundred four million, five hundred fifty-five thousand, one hundred forty-one".