1128402442 has 4 divisors (see below), whose sum is σ = 1692603666. Its totient is φ = 564201220.

The previous prime is 1128402439. The next prime is 1128402463. The reversal of 1128402442 is 2442048211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 817902801 + 310499641 = 28599^2 + 17621^2 .

It is a super-2 number, since 2×1128402442² = 2546584142223126728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1128402442.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282100609 + ... + 282100612.

Almost surely, 2^1128402442 is an apocalyptic number.

1128402442 is a deficient number, since it is larger than the sum of its proper divisors (564201224).

1128402442 is an equidigital number, since it uses as much as digits as its factorization.

1128402442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564201223.

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 1128402442 is about 33591.7019812929. The cubic root of 1128402442 is about 1041.0893547284.

The spelling of 1128402442 in words is "one billion, one hundred twenty-eight million, four hundred two thousand, four hundred forty-two".