1262120115 has 16 divisors (see below), whose sum is σ = 2020183200. Its totient is φ = 672867072.

The previous prime is 1262120099. The next prime is 1262120129. The reversal of 1262120115 is 5110212621.

It is not a de Polignac number, because 1262120115 - 2⁴ = 1262120099 is a prime.

It is a super-2 number, since 2×1262120115² = 3185894369375226450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1262120091 and 1262120100.

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 15 ways as a sum of consecutive naturals, for example, 26751 + ... + 56919.

It is an arithmetic number, because the mean of its divisors is an integer number (126261450).

Almost surely, 2^1262120115 is an apocalyptic number.

1262120115 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1262120115 is a deficient number, since it is larger than the sum of its proper divisors (758063085).

1262120115 is a wasteful number, since it uses less digits than its factorization.

1262120115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32966.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 1262120115 is about 35526.3298836229. The cubic root of 1262120115 is about 1080.6877520991.

Adding to 1262120115 its reverse (5110212621), we get a palindrome (6372332736).

The spelling of 1262120115 in words is "one billion, two hundred sixty-two million, one hundred twenty thousand, one hundred fifteen".