1000423155 has 8 divisors (see below), whose sum is σ = 1600677072. Its totient is φ = 533559008.

The previous prime is 1000423147. The next prime is 1000423201. The reversal of 1000423155 is 5513240001.

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

It is a cyclic number.

It is not a de Polignac number, because 1000423155 - 2³ = 1000423147 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33347424 + ... + 33347453.

It is an arithmetic number, because the mean of its divisors is an integer number (200084634).

Almost surely, 2^1000423155 is an apocalyptic number.

1000423155 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1000423155 is a deficient number, since it is larger than the sum of its proper divisors (600253917).

1000423155 is an equidigital number, since it uses as much as digits as its factorization.

1000423155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66694885.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1000423155 is about 31629.4665620525. The cubic root of 1000423155 is about 1000.1410317758.

Adding to 1000423155 its reverse (5513240001), we get a palindrome (6513663156).

The spelling of 1000423155 in words is "one billion, four hundred twenty-three thousand, one hundred fifty-five".