1261602026 has 16 divisors (see below), whose sum is σ = 2020607424. Its totient is φ = 589341984.

The previous prime is 1261602019. The next prime is 1261602031. The reversal of 1261602026 is 6202061621.

It is a junction number, because it is equal to n+sod(n) for n = 1261601986 and 1261602004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 316931 + ... + 320886.

It is an arithmetic number, because the mean of its divisors is an integer number (126287964).

Almost surely, 2^1261602026 is an apocalyptic number.

1261602026 is a deficient number, since it is larger than the sum of its proper divisors (759005398).

1261602026 is a wasteful number, since it uses less digits than its factorization.

1261602026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637885.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 1261602026 is about 35519.0375151129. The cubic root of 1261602026 is about 1080.5398609811.

Adding to 1261602026 its reverse (6202061621), we get a palindrome (7463663647).

The spelling of 1261602026 in words is "one billion, two hundred sixty-one million, six hundred two thousand, twenty-six".