1142102120 has 16 divisors (see below), whose sum is σ = 2569729860. Its totient is φ = 456840832.

The previous prime is 1142102119. The next prime is 1142102189. The reversal of 1142102120 is 212012411.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1021058116 + 121044004 = 31954^2 + 11002^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1142102095 and 1142102104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14276237 + ... + 14276316.

Almost surely, 2^1142102120 is an apocalyptic number.

1142102120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1142102120 is an abundant number, since it is smaller than the sum of its proper divisors (1427627740).

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

1142102120 is a wasteful number, since it uses less digits than its factorization.

1142102120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28552564 (or 28552560 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1142102120 is about 33795.0014055333. The cubic root of 1142102120 is about 1045.2856281412.

Adding to 1142102120 its reverse (212012411), we get a palindrome (1354114531).

The spelling of 1142102120 in words is "one billion, one hundred forty-two million, one hundred two thousand, one hundred twenty".