1275763740 has 48 divisors (see below), whose sum is σ = 3760149120. Its totient is φ = 322297920.

The previous prime is 1275763729. The next prime is 1275763751. The reversal of 1275763740 is 473675721.

It is an interprime number because it is at equal distance from previous prime (1275763729) and next prime (1275763751).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1275763692 and 1275763701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558406 + ... + 560685.

It is an arithmetic number, because the mean of its divisors is an integer number (78336440).

Almost surely, 2^1275763740 is an apocalyptic number.

1275763740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1275763740 is an abundant number, since it is smaller than the sum of its proper divisors (2484385380).

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

1275763740 is a wasteful number, since it uses less digits than its factorization.

1275763740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1119122 (or 1119120 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 42.

The square root of 1275763740 is about 35717.8350407748. The cubic root of 1275763740 is about 1084.5679124986.

The spelling of 1275763740 in words is "one billion, two hundred seventy-five million, seven hundred sixty-three thousand, seven hundred forty".