1142521045 has 4 divisors (see below), whose sum is σ = 1371025260. Its totient is φ = 914016832.

The previous prime is 1142521043. The next prime is 1142521063. The reversal of 1142521045 is 5401252411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 870073009 + 272448036 = 29497^2 + 16506^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142521045 - 2¹ = 1142521043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142521043) 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, 114252100 + ... + 114252109.

It is an arithmetic number, because the mean of its divisors is an integer number (342756315).

Almost surely, 2^1142521045 is an apocalyptic number.

It is an amenable number.

1142521045 is a deficient number, since it is larger than the sum of its proper divisors (228504215).

1142521045 is an equidigital number, since it uses as much as digits as its factorization.

1142521045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228504214.

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 1142521045 is about 33801.1988692709. The cubic root of 1142521045 is about 1045.4134167001.

Adding to 1142521045 its reverse (5401252411), we get a palindrome (6543773456).

The spelling of 1142521045 in words is "one billion, one hundred forty-two million, five hundred twenty-one thousand, forty-five".