1270499785 has 4 divisors (see below), whose sum is σ = 1524599748. Its totient is φ = 1016399824.

The previous prime is 1270499767. The next prime is 1270499827. The reversal of 1270499785 is 5879940721.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5879940721 = 17093 ⋅343997.

It can be written as a sum of positive squares in 2 ways, for example, as 955366281 + 315133504 = 30909^2 + 17752^2 .

It is a cyclic number.

It is not a de Polignac number, because 1270499785 - 2²⁹ = 733628873 is a prime.

It is a super-2 number, since 2×1270499785² = 3228339407370092450, which contains 22 as substring.

It is a Duffinian number.

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, 127049974 + ... + 127049983.

It is an arithmetic number, because the mean of its divisors is an integer number (381149937).

Almost surely, 2^1270499785 is an apocalyptic number.

It is an amenable number.

1270499785 is a deficient number, since it is larger than the sum of its proper divisors (254099963).

1270499785 is an equidigital number, since it uses as much as digits as its factorization.

1270499785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254099962.

The product of its (nonzero) digits is 1270080, while the sum is 52.

The square root of 1270499785 is about 35644.0708253140. The cubic root of 1270499785 is about 1083.0741701690.

The spelling of 1270499785 in words is "one billion, two hundred seventy million, four hundred ninety-nine thousand, seven hundred eighty-five".