1142021018 has 4 divisors (see below), whose sum is σ = 1713031530. Its totient is φ = 571010508.

The previous prime is 1142020991. The next prime is 1142021063. The reversal of 1142021018 is 8101202411.

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

It can be written as a sum of positive squares in only one way, i.e., 639230089 + 502790929 = 25283^2 + 22423^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 285505253 + ... + 285505256.

Almost surely, 2^1142021018 is an apocalyptic number.

1142021018 is a deficient number, since it is larger than the sum of its proper divisors (571010512).

1142021018 is an equidigital number, since it uses as much as digits as its factorization.

1142021018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571010511.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 1142021018 is about 33793.8014730512. The cubic root of 1142021018 is about 1045.2608852394.

Adding to 1142021018 its reverse (8101202411), we get a palindrome (9243223429).

The spelling of 1142021018 in words is "one billion, one hundred forty-two million, twenty-one thousand, eighteen".