1143120142 has 16 divisors (see below), whose sum is σ = 1819146240. Its totient is φ = 537212088.

The previous prime is 1143120131. The next prime is 1143120157. The reversal of 1143120142 is 2410213411.

It is a super-2 number, since 2×1143120142² = 2613447318092200328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113608 + ... + 123259.

It is an arithmetic number, because the mean of its divisors is an integer number (113696640).

Almost surely, 2^1143120142 is an apocalyptic number.

1143120142 is a deficient number, since it is larger than the sum of its proper divisors (676026098).

1143120142 is a wasteful number, since it uses less digits than its factorization.

1143120142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237015.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1143120142 is about 33810.0597751616. The cubic root of 1143120142 is about 1045.5961105204.

Adding to 1143120142 its reverse (2410213411), we get a palindrome (3553333553).

The spelling of 1143120142 in words is "one billion, one hundred forty-three million, one hundred twenty thousand, one hundred forty-two".