1012123545 has 8 divisors (see below), whose sum is σ = 1619397696. Its totient is φ = 539799216.

The previous prime is 1012123537. The next prime is 1012123571. The reversal of 1012123545 is 5453212101.

It is a happy number.

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

It is not a de Polignac number, because 1012123545 - 2³ = 1012123537 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33737437 + ... + 33737466.

It is an arithmetic number, because the mean of its divisors is an integer number (202424712).

Almost surely, 2^1012123545 is an apocalyptic number.

1012123545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1012123545 is a deficient number, since it is larger than the sum of its proper divisors (607274151).

1012123545 is an equidigital number, since it uses as much as digits as its factorization.

1012123545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67474911.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 1012123545 is about 31813.8891838140. The cubic root of 1012123545 is about 1004.0249596314.

Adding to 1012123545 its reverse (5453212101), we get a palindrome (6465335646).

The spelling of 1012123545 in words is "one billion, twelve million, one hundred twenty-three thousand, five hundred forty-five".