1142452220 has 48 divisors (see below), whose sum is σ = 2952804288. Its totient is φ = 361566720.

The previous prime is 1142452193. The next prime is 1142452231. The reversal of 1142452220 is 222542411.

1142452220 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312041 + ... + 315680.

It is an arithmetic number, because the mean of its divisors is an integer number (61516756).

Almost surely, 2^1142452220 is an apocalyptic number.

1142452220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142452220 is an abundant number, since it is smaller than the sum of its proper divisors (1810352068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1142452220 is a wasteful number, since it uses less digits than its factorization.

1142452220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627750 (or 627748 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1142452220 is about 33800.1807687474. The cubic root of 1142452220 is about 1045.3924245199.

Adding to 1142452220 its reverse (222542411), we get a palindrome (1364994631).

The spelling of 1142452220 in words is "one billion, one hundred forty-two million, four hundred fifty-two thousand, two hundred twenty".