1261230435 has 24 divisors (see below), whose sum is σ = 2187070704. Its totient is φ = 672367680.

The previous prime is 1261230427. The next prime is 1261230473. The reversal of 1261230435 is 5340321621.

1261230435 is a `hidden beast` number, since 1 + 2 + 612 + 3 + 0 + 43 + 5 = 666.

1261230435 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1261230435 - 2³ = 1261230427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1261230399 and 1261230408.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137905 + ... + 146765.

It is an arithmetic number, because the mean of its divisors is an integer number (91127946).

Almost surely, 2^1261230435 is an apocalyptic number.

1261230435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1261230435 is a deficient number, since it is larger than the sum of its proper divisors (925840269).

1261230435 is a wasteful number, since it uses less digits than its factorization.

1261230435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12035 (or 12032 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1261230435 is about 35513.8062589748. The cubic root of 1261230435 is about 1080.4337635202.

The spelling of 1261230435 in words is "one billion, two hundred sixty-one million, two hundred thirty thousand, four hundred thirty-five".