1000128554 has 8 divisors (see below), whose sum is σ = 1509396960. Its totient is φ = 496996236.

The previous prime is 1000128533. The next prime is 1000128589. The reversal of 1000128554 is 4558210001.

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

It is a super-2 number, since 2×1000128554² = 2000514249052261832, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1533614 + ... + 1534265.

It is an arithmetic number, because the mean of its divisors is an integer number (188674620).

Almost surely, 2^1000128554 is an apocalyptic number.

1000128554 is a deficient number, since it is larger than the sum of its proper divisors (509268406).

1000128554 is a wasteful number, since it uses less digits than its factorization.

1000128554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3068044.

The product of its (nonzero) digits is 1600, while the sum is 26.

The square root of 1000128554 is about 31624.8091535744. The cubic root of 1000128554 is about 1000.0428494972.

Adding to 1000128554 its reverse (4558210001), we get a palindrome (5558338555).

The spelling of 1000128554 in words is "one billion, one hundred twenty-eight thousand, five hundred fifty-four".