1206172534 has 16 divisors (see below), whose sum is σ = 2109924000. Its totient is φ = 516930792.

The previous prime is 1206172529. The next prime is 1206172543. The reversal of 1206172534 is 4352716021.

It is a junction number, because it is equal to n+sod(n) for n = 1206172496 and 1206172505.

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 7 ways as a sum of consecutive naturals, for example, 878449 + ... + 879820.

It is an arithmetic number, because the mean of its divisors is an integer number (131870250).

Almost surely, 2^1206172534 is an apocalyptic number.

1206172534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1206172534 is a deficient number, since it is larger than the sum of its proper divisors (903751466).

1206172534 is an equidigital number, since it uses as much as digits as its factorization.

1206172534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1758292 (or 1758278 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 1206172534 is about 34729.9947307799. The cubic root of 1206172534 is about 1064.4774807537.

Adding to 1206172534 its reverse (4352716021), we get a palindrome (5558888555).

The spelling of 1206172534 in words is "one billion, two hundred six million, one hundred seventy-two thousand, five hundred thirty-four".