1142838248 has 8 divisors (see below), whose sum is σ = 2142821730. Its totient is φ = 571419120.

The previous prime is 1142838247. The next prime is 1142838271. The reversal of 1142838248 is 8428382411.

It can be written as a sum of positive squares in only one way, i.e., 929152324 + 213685924 = 30482^2 + 14618^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1142838248² = 2612158522183419008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1142838241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71427383 + ... + 71427398.

Almost surely, 2^1142838248 is an apocalyptic number.

It is an amenable number.

1142838248 is a deficient number, since it is larger than the sum of its proper divisors (999983482).

1142838248 is a wasteful number, since it uses less digits than its factorization.

1142838248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142854787 (or 142854783 counting only the distinct ones).

The product of its digits is 98304, while the sum is 41.

The square root of 1142838248 is about 33805.8907292797. The cubic root of 1142838248 is about 1045.5101552794.

The spelling of 1142838248 in words is "one billion, one hundred forty-two million, eight hundred thirty-eight thousand, two hundred forty-eight".