1142388744 has 48 divisors (see below), whose sum is σ = 3322256400. Its totient is φ = 326396448.

The previous prime is 1142388733. The next prime is 1142388761. The reversal of 1142388744 is 4478832411.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1142388696 and 1142388705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 484534 + ... + 486885.

It is an arithmetic number, because the mean of its divisors is an integer number (69213675).

Almost surely, 2^1142388744 is an apocalyptic number.

1142388744 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1142388744 is an abundant number, since it is smaller than the sum of its proper divisors (2179867656).

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

1142388744 is a wasteful number, since it uses less digits than its factorization.

1142388744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 971442 (or 971431 counting only the distinct ones).

The product of its digits is 172032, while the sum is 42.

The square root of 1142388744 is about 33799.2417666432. The cubic root of 1142388744 is about 1045.3730630804.

The spelling of 1142388744 in words is "one billion, one hundred forty-two million, three hundred eighty-eight thousand, seven hundred forty-four".