1260123345 has 64 divisors (see below), whose sum is σ = 2464035840. Its totient is φ = 607129344.

The previous prime is 1260123323. The next prime is 1260123367. The reversal of 1260123345 is 5433210621.

1260123345 is a `hidden beast` number, since 1 + 2 + 601 + 23 + 34 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1260123323) and next prime (1260123367).

It is not a de Polignac number, because 1260123345 - 2⁵ = 1260123313 is a prime.

It is a super-2 number, since 2×1260123345² = 3175821689227978050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 63 ways as a sum of consecutive naturals, for example, 74847 + ... + 90123.

It is an arithmetic number, because the mean of its divisors is an integer number (38500560).

Almost surely, 2^1260123345 is an apocalyptic number.

1260123345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1260123345 is a deficient number, since it is larger than the sum of its proper divisors (1203912495).

1260123345 is a wasteful number, since it uses less digits than its factorization.

1260123345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15351 (or 15345 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1260123345 is about 35498.2160819385. The cubic root of 1260123345 is about 1080.1175412193.

Adding to 1260123345 its reverse (5433210621), we get a palindrome (6693333966).

The spelling of 1260123345 in words is "one billion, two hundred sixty million, one hundred twenty-three thousand, three hundred forty-five".