1153142031421 has 16 divisors (see below), whose sum is σ = 1173410078400. Its totient is φ = 1133033569920.

The previous prime is 1153142031373. The next prime is 1153142031463. The reversal of 1153142031421 is 1241302413511.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1153142031421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1153142031421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153142031221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25073155 + ... + 25119103.

It is an arithmetic number, because the mean of its divisors is an integer number (73338129900).

Almost surely, 2^{1153142031421} is an apocalyptic number.

It is an amenable number.

1153142031421 is a deficient number, since it is larger than the sum of its proper divisors (20268046979).

1153142031421 is a wasteful number, since it uses less digits than its factorization.

1153142031421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47676.

The product of its (nonzero) digits is 2880, while the sum is 28.

Adding to 1153142031421 its reverse (1241302413511), we get a palindrome (2394444444932).

The spelling of 1153142031421 in words is "one trillion, one hundred fifty-three billion, one hundred forty-two million, thirty-one thousand, four hundred twenty-one".