1275133430 has 16 divisors (see below), whose sum is σ = 2295728784. Its totient is φ = 509944800.

The previous prime is 1275133427. The next prime is 1275133439. The reversal of 1275133430 is 343315721.

It is a junction number, because it is equal to n+sod(n) for n = 1275133393 and 1275133402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1275133439) 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, 49880 + ... + 70980.

It is an arithmetic number, because the mean of its divisors is an integer number (143483049).

Almost surely, 2^1275133430 is an apocalyptic number.

1275133430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1275133430 is a deficient number, since it is larger than the sum of its proper divisors (1020595354).

1275133430 is a wasteful number, since it uses less digits than its factorization.

1275133430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27151.

The product of its (nonzero) digits is 7560, while the sum is 29.

The square root of 1275133430 is about 35709.0104875506. The cubic root of 1275133430 is about 1084.3892674528.

The spelling of 1275133430 in words is "one billion, two hundred seventy-five million, one hundred thirty-three thousand, four hundred thirty".