1261430334 has 40 divisors (see below), whose sum is σ = 2829474648. Its totient is φ = 420040080.

The previous prime is 1261430297. The next prime is 1261430341. The reversal of 1261430334 is 4330341621.

1261430334 is a `hidden beast` number, since 12 + 614 + 3 + 0 + 3 + 34 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 1261430298 and 1261430307.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 177469 + ... + 184439.

Almost surely, 2^1261430334 is an apocalyptic number.

1261430334 is an abundant number, since it is smaller than the sum of its proper divisors (1568044314).

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

1261430334 is a wasteful number, since it uses less digits than its factorization.

1261430334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8102 (or 8093 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 1261430334 is about 35516.6205318017. The cubic root of 1261430334 is about 1080.4908417018.

Adding to 1261430334 its reverse (4330341621), we get a palindrome (5591771955).

The spelling of 1261430334 in words is "one billion, two hundred sixty-one million, four hundred thirty thousand, three hundred thirty-four".