1142521453 has 4 divisors (see below), whose sum is σ = 1159574080. Its totient is φ = 1125468828.

The previous prime is 1142521447. The next prime is 1142521469. The reversal of 1142521453 is 3541252411.

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 1142521453 - 2⁹ = 1142520941 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 (1142521403) 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, 8526213 + ... + 8526346.

It is an arithmetic number, because the mean of its divisors is an integer number (289893520).

Almost surely, 2^1142521453 is an apocalyptic number.

It is an amenable number.

1142521453 is a deficient number, since it is larger than the sum of its proper divisors (17052627).

1142521453 is an equidigital number, since it uses as much as digits as its factorization.

1142521453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17052626.

The product of its digits is 4800, while the sum is 28.

The square root of 1142521453 is about 33801.2049045592. The cubic root of 1142521453 is about 1045.4135411409.

Adding to 1142521453 its reverse (3541252411), we get a palindrome (4683773864).

The spelling of 1142521453 in words is "one billion, one hundred forty-two million, five hundred twenty-one thousand, four hundred fifty-three".