1290085203 has 16 divisors (see below), whose sum is σ = 1958075136. Its totient is φ = 747875040.

The previous prime is 1290085193. The next prime is 1290085207. The reversal of 1290085203 is 3025800921.

It is a happy number.

It is not a de Polignac number, because 1290085203 - 2⁸ = 1290084947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1290085207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 849100 + ... + 850617.

It is an arithmetic number, because the mean of its divisors is an integer number (122379696).

Almost surely, 2^1290085203 is an apocalyptic number.

1290085203 is a deficient number, since it is larger than the sum of its proper divisors (667989933).

1290085203 is a wasteful number, since it uses less digits than its factorization.

1290085203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1699754.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1290085203 is about 35917.7560963933. The cubic root of 1290085203 is about 1088.6111995656.

The spelling of 1290085203 in words is "one billion, two hundred ninety million, eighty-five thousand, two hundred three".