1153421423 has 16 divisors (see below), whose sum is σ = 1522623744. Its totient is φ = 845900160.

The previous prime is 1153421417. The next prime is 1153421431. The reversal of 1153421423 is 3241243511.

It is a happy number.

It is not a de Polignac number, because 1153421423 - 2⁸ = 1153421167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1153421392 and 1153421401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153421443) 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, 439265 + ... + 441882.

It is an arithmetic number, because the mean of its divisors is an integer number (95163984).

Almost surely, 2^1153421423 is an apocalyptic number.

1153421423 is a deficient number, since it is larger than the sum of its proper divisors (369202321).

1153421423 is a wasteful number, since it uses less digits than its factorization.

1153421423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 881182.

The product of its digits is 2880, while the sum is 26.

The square root of 1153421423 is about 33962.0585801273. The cubic root of 1153421423 is about 1048.7275358096.

Adding to 1153421423 its reverse (3241243511), we get a palindrome (4394664934).

The spelling of 1153421423 in words is "one billion, one hundred fifty-three million, four hundred twenty-one thousand, four hundred twenty-three".