1234206445 has 4 divisors (see below), whose sum is σ = 1481047740. Its totient is φ = 987365152.

The previous prime is 1234206439. The next prime is 1234206469. The reversal of 1234206445 is 5446024321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 727866441 + 506340004 = 26979^2 + 22502^2 .

It is a cyclic number.

It is not a de Polignac number, because 1234206445 - 2²³ = 1225817837 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123420640 + ... + 123420649.

It is an arithmetic number, because the mean of its divisors is an integer number (370261935).

Almost surely, 2^1234206445 is an apocalyptic number.

It is an amenable number.

1234206445 is a deficient number, since it is larger than the sum of its proper divisors (246841295).

1234206445 is an equidigital number, since it uses as much as digits as its factorization.

1234206445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246841294.

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 1234206445 is about 35131.2744573834. The cubic root of 1234206445 is about 1072.6612780288.

The spelling of 1234206445 in words is "one billion, two hundred thirty-four million, two hundred six thousand, four hundred forty-five".