1154132145421 has 4 divisors (see below), whose sum is σ = 1156426643232. Its totient is φ = 1151837647612.

The previous prime is 1154132145409. The next prime is 1154132145449. The reversal of 1154132145421 is 1245412314511.

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 1154132145421 - 2⁵ = 1154132145389 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 (1154132142421) 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, 1147248151 + ... + 1147249156.

It is an arithmetic number, because the mean of its divisors is an integer number (289106660808).

Almost surely, 2^{1154132145421} is an apocalyptic number.

It is an amenable number.

1154132145421 is a deficient number, since it is larger than the sum of its proper divisors (2294497811).

1154132145421 is an equidigital number, since it uses as much as digits as its factorization.

1154132145421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2294497810.

The product of its digits is 19200, while the sum is 34.

Adding to 1154132145421 its reverse (1245412314511), we get a palindrome (2399544459932).

The spelling of 1154132145421 in words is "one trillion, one hundred fifty-four billion, one hundred thirty-two million, one hundred forty-five thousand, four hundred twenty-one".