1275770540 has 24 divisors (see below), whose sum is σ = 2922674832. Its totient is φ = 463916480.

The previous prime is 1275770533. The next prime is 1275770543. The reversal of 1275770540 is 450775721.

It is a junction number, because it is equal to n+sod(n) for n = 1275770494 and 1275770503.

It is not an unprimeable number, because it can be changed into a prime (1275770543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2899259 + ... + 2899698.

It is an arithmetic number, because the mean of its divisors is an integer number (121778118).

Almost surely, 2^1275770540 is an apocalyptic number.

1275770540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1275770540 is an abundant number, since it is smaller than the sum of its proper divisors (1646904292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1275770540 is a wasteful number, since it uses less digits than its factorization.

1275770540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5798977 (or 5798975 counting only the distinct ones).

The product of its (nonzero) digits is 68600, while the sum is 38.

The square root of 1275770540 is about 35717.9302311878. The cubic root of 1275770540 is about 1084.5698394616.

The spelling of 1275770540 in words is "one billion, two hundred seventy-five million, seven hundred seventy thousand, five hundred forty".