1249641706 has 8 divisors (see below), whose sum is σ = 1920181284. Its totient is φ = 609581280.

The previous prime is 1249641689. The next prime is 1249641709. The reversal of 1249641706 is 6071469421.

It can be written as a sum of positive squares in 2 ways, for example, as 1222131681 + 27510025 = 34959^2 + 5245^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1249641709) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7619685 + ... + 7619848.

Almost surely, 2^1249641706 is an apocalyptic number.

1249641706 is a deficient number, since it is larger than the sum of its proper divisors (670539578).

1249641706 is a wasteful number, since it uses less digits than its factorization.

1249641706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15239576.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 1249641706 is about 35350.2716538360. The cubic root of 1249641706 is about 1077.1144123776.

The spelling of 1249641706 in words is "one billion, two hundred forty-nine million, six hundred forty-one thousand, seven hundred six".