1275165140 has 12 divisors (see below), whose sum is σ = 2677846836. Its totient is φ = 510066048.

The previous prime is 1275165127. The next prime is 1275165169. The reversal of 1275165140 is 415615721.

It can be written as a sum of positive squares in 2 ways, for example, as 836597776 + 438567364 = 28924^2 + 20942^2 .

It is a super-2 number, since 2×1275165140² = 3252092268542439200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1275165097 and 1275165106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31879109 + ... + 31879148.

It is an arithmetic number, because the mean of its divisors is an integer number (223153903).

Almost surely, 2^1275165140 is an apocalyptic number.

1275165140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1275165140 is an abundant number, since it is smaller than the sum of its proper divisors (1402681696).

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

1275165140 is a wasteful number, since it uses less digits than its factorization.

1275165140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63758266 (or 63758264 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The square root of 1275165140 is about 35709.4544903727. The cubic root of 1275165140 is about 1084.3982562373.

The spelling of 1275165140 in words is "one billion, two hundred seventy-five million, one hundred sixty-five thousand, one hundred forty".