1142757890 has 8 divisors (see below), whose sum is σ = 2056964220. Its totient is φ = 457103152.

The previous prime is 1142757877. The next prime is 1142757899. The reversal of 1142757890 is 987572411.

It can be written as a sum of positive squares in 2 ways, for example, as 924220801 + 218537089 = 30401^2 + 14783^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1142757899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57137885 + ... + 57137904.

Almost surely, 2^1142757890 is an apocalyptic number.

1142757890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1142757890 is a deficient number, since it is larger than the sum of its proper divisors (914206330).

1142757890 is a wasteful number, since it uses less digits than its factorization.

1142757890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114275796.

The product of its (nonzero) digits is 141120, while the sum is 44.

The square root of 1142757890 is about 33804.7021877135. The cubic root of 1142757890 is about 1045.4856498943.

The spelling of 1142757890 in words is "one billion, one hundred forty-two million, seven hundred fifty-seven thousand, eight hundred ninety".