1261434034 has 64 divisors (see below), whose sum is σ = 2440544256. Its totient is φ = 476239104.

The previous prime is 1261434023. The next prime is 1261434037. The reversal of 1261434034 is 4304341621.

It is a junction number, because it is equal to n+sod(n) for n = 1261433993 and 1261434011.

It is not an unprimeable number, because it can be changed into a prime (1261434037) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 254827 + ... + 259729.

It is an arithmetic number, because the mean of its divisors is an integer number (38133504).

Almost surely, 2^1261434034 is an apocalyptic number.

1261434034 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1261434034 is a deficient number, since it is larger than the sum of its proper divisors (1179110222).

1261434034 is a wasteful number, since it uses less digits than its factorization.

1261434034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4999.

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 1261434034 is about 35516.6726200527. The cubic root of 1261434034 is about 1080.4918981248.

Adding to 1261434034 its reverse (4304341621), we get a palindrome (5565775655).

The spelling of 1261434034 in words is "one billion, two hundred sixty-one million, four hundred thirty-four thousand, thirty-four".