1128420538 has 16 divisors (see below), whose sum is σ = 1952184960. Its totient is φ = 479171376.

The previous prime is 1128420533. The next prime is 1128420539. The reversal of 1128420538 is 8350248211.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1128420533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368206 + ... + 371257.

It is an arithmetic number, because the mean of its divisors is an integer number (122011560).

Almost surely, 2^1128420538 is an apocalyptic number.

1128420538 is a deficient number, since it is larger than the sum of its proper divisors (823764422).

1128420538 is a wasteful number, since it uses less digits than its factorization.

1128420538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739581.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 1128420538 is about 33591.9713324479. The cubic root of 1128420538 is about 1041.0949199569.

Adding to 1128420538 its reverse (8350248211), we get a palindrome (9478668749).

The spelling of 1128420538 in words is "one billion, one hundred twenty-eight million, four hundred twenty thousand, five hundred thirty-eight".