1203426605 has 8 divisors (see below), whose sum is σ = 1467786264. Its totient is φ = 946958400.

The previous prime is 1203426557. The next prime is 1203426607. The reversal of 1203426605 is 5066243021.

It can be written as a sum of positive squares in 4 ways, for example, as 151462249 + 1051964356 = 12307^2 + 32434^2 .

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

It is not a de Polignac number, because 1203426605 - 2¹⁰ = 1203425581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203426607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1972526 + ... + 1973135.

It is an arithmetic number, because the mean of its divisors is an integer number (183473283).

Almost surely, 2^1203426605 is an apocalyptic number.

It is an amenable number.

1203426605 is a deficient number, since it is larger than the sum of its proper divisors (264359659).

1203426605 is an equidigital number, since it uses as much as digits as its factorization.

1203426605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3945727.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1203426605 is about 34690.4396772367. The cubic root of 1203426605 is about 1063.6690832737.

Adding to 1203426605 its reverse (5066243021), we get a palindrome (6269669626).

The spelling of 1203426605 in words is "one billion, two hundred three million, four hundred twenty-six thousand, six hundred five".